ed92_b2bd

Two-Point Test Cross Problem

A test cross is a way to explore the relationship between genes and their respective alleles. It is a useful tool for genetic mapping and deciphering the inheritance of traits. Specifically, a two-point test cross examines two (2) genes at the same time to learn about their assortment in gamete formation.

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene C is affiliated with the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.
Gene D is related to the 'dewy' phenotype. A fruit fly that is homozygous recessive for Gene D appears moist, with its body covered in tiny droplets of water.

Phenotype	Genotypes		Progeny Count
chummy, dewy	c	d	600
chummy	c	+	2,182
dewy	+	d	2,242
wildtype	+	+	576
TOTAL =			5,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

Using the data presented in the table to determine the configuration of the alleles on the parental chromosomes. Determine whether the alleles for the two genes are in a cis (on the same chromosome) or trans (on different chromosomes) configuration.

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

97c5_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene P is analogous to the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.
Gene Y is connected with the 'yucky' phenotype. A fruit fly that is homozygous recessive for Gene Y gives off an unpleasant odor and has a generally unappealing look.

Phenotype	Genotypes		Progeny Count
prickly, yucky	p	y	529
prickly	p	+	2,992
yucky	+	y	2,958
wildtype	+	+	521
TOTAL =			7,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

fa30_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene B is affiliated with the 'bumpy' phenotype. A fruit fly that is homozygous recessive for Gene B has a skin texture that is not smooth, but rough with small bumps all over.
Gene C is correlated with the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.

Phenotype	Genotypes		Progeny Count
bumpy, chummy	b	c	471
bumpy	b	+	4,221
chummy	+	c	4,059
wildtype	+	+	449
TOTAL =			9,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

2694_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene C is correlated with the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.
Gene T is connected with the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.

Phenotype	Genotypes		Progeny Count
chummy, tipsy	c	t	407
chummy	c	+	882
tipsy	+	t	860
wildtype	+	+	451
TOTAL =			2,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

9057_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene A is associated with the 'artsy' phenotype. A fruit fly that is homozygous recessive for Gene A has wings that are colorful and distinctive patterns.
Gene C is analogous to the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.

Phenotype	Genotypes		Progeny Count
artsy, chummy	a	c	222
artsy	a	+	717
chummy	+	c	651
wildtype	+	+	210
TOTAL =			1,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

03e1_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene H is analogous to the 'horsey' phenotype. A fruit fly that is homozygous recessive for Gene H is quite big and strong-looking, much larger than your typical fruit fly.
Gene W is affiliated with the 'waxy' phenotype. A fruit fly that is homozygous recessive for Gene W has a thick protective layer that is water resistant and opague.

Phenotype	Genotypes		Progeny Count
horsey, waxy	h	w	2,535
horsey	h	+	386
waxy	+	w	368
wildtype	+	+	2,511
TOTAL =			5,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

318f_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene D is analogous to the 'dewy' phenotype. A fruit fly that is homozygous recessive for Gene D appears moist, with its body covered in tiny droplets of water.
Gene H is affiliated with the 'horsey' phenotype. A fruit fly that is homozygous recessive for Gene H is quite big and strong-looking, much larger than your typical fruit fly.

Phenotype	Genotypes		Progeny Count
dewy, horsey	d	h	3,899
dewy	d	+	197
horsey	+	h	213
wildtype	+	+	3,891
TOTAL =			8,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

8d50_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene D is associated with the 'dewy' phenotype. A fruit fly that is homozygous recessive for Gene D appears moist, with its body covered in tiny droplets of water.
Gene N is affiliated with the 'nerdy' phenotype. A fruit fly that is homozygous recessive for Gene N has large, prominent eyes that stand out, much like thick-rimmed glasses.

Phenotype	Genotypes		Progeny Count
dewy, nerdy	d	n	1,641
dewy	d	+	1,108
nerdy	+	n	1,132
wildtype	+	+	1,719
TOTAL =			5,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

8e94_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene D is analogous to the 'dewy' phenotype. A fruit fly that is homozygous recessive for Gene D appears moist, with its body covered in tiny droplets of water.
Gene J is correlated with the 'jerky' phenotype. A fruit fly that is homozygous recessive for Gene J moves in rapid and sudden movements, displaying an unpredictable flight pattern.

Phenotype	Genotypes		Progeny Count
dewy, jerky	d	j	536
dewy	d	+	2,493
jerky	+	j	2,427
wildtype	+	+	544
TOTAL =			6,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

0fe3_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene J is correlated with the 'jerky' phenotype. A fruit fly that is homozygous recessive for Gene J moves in rapid and sudden movements, displaying an unpredictable flight pattern.
Gene W is analogous to the 'waxy' phenotype. A fruit fly that is homozygous recessive for Gene W has a thick protective layer that is water resistant and opague.

Phenotype	Genotypes		Progeny Count
jerky, waxy	j	w	1,299
jerky	j	+	3,351
waxy	+	w	3,273
wildtype	+	+	1,277
TOTAL =			9,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

5349_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene E is affiliated with the 'eery' phenotype. A fruit fly that is homozygous recessive for Gene E appears to have something off, crooked limbs and other twisted appendages.
Gene K is affiliated with the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.

Phenotype	Genotypes		Progeny Count
eery, kidney	e	k	165
eery	e	+	2,977
kidney	+	k	3,103
wildtype	+	+	155
TOTAL =			6,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

e12e_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene A is linked with the 'artsy' phenotype. A fruit fly that is homozygous recessive for Gene A has wings that are colorful and distinctive patterns.
Gene H is affiliated with the 'horsey' phenotype. A fruit fly that is homozygous recessive for Gene H is quite big and strong-looking, much larger than your typical fruit fly.

Phenotype	Genotypes		Progeny Count
artsy, horsey	a	h	705
artsy	a	+	284
horsey	+	h	276
wildtype	+	+	735
TOTAL =			2,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

fd0e_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene A is connected with the 'artsy' phenotype. A fruit fly that is homozygous recessive for Gene A has wings that are colorful and distinctive patterns.
Gene C is connected with the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.

Phenotype	Genotypes		Progeny Count
artsy, chummy	a	c	1,523
artsy	a	+	59
chummy	+	c	69
wildtype	+	+	1,549
TOTAL =			3,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

baea_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene C is analogous to the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.
Gene P is connected with the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.

Phenotype	Genotypes		Progeny Count
chummy, prickly	c	p	1,225
chummy	c	+	2,243
prickly	+	p	2,177
wildtype	+	+	1,155
TOTAL =			6,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

a6bc_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene M is related to the 'mushy' phenotype. A fruit fly that is homozygous recessive for Gene M feels soft to the touch and unusually squishy, unlike the usual firmness.
Gene W is linked with the 'waxy' phenotype. A fruit fly that is homozygous recessive for Gene W has a thick protective layer that is water resistant and opague.

Phenotype	Genotypes		Progeny Count
mushy, waxy	m	w	592
mushy	m	+	198
waxy	+	w	186
wildtype	+	+	624
TOTAL =			1,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

48f4_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene A is correlated with the 'artsy' phenotype. A fruit fly that is homozygous recessive for Gene A has wings that are colorful and distinctive patterns.
Gene X is affiliated with the 'xanthic' phenotype. A fruit fly that is homozygous recessive for Gene X has a fluorescent bright yellow coloring.

Phenotype	Genotypes		Progeny Count
artsy, xanthic	a	x	2,344
artsy	a	+	520
xanthic	+	x	524
wildtype	+	+	2,412
TOTAL =			5,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

39a4_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene D is analogous to the 'dewy' phenotype. A fruit fly that is homozygous recessive for Gene D appears moist, with its body covered in tiny droplets of water.
Gene X is analogous to the 'xanthic' phenotype. A fruit fly that is homozygous recessive for Gene X has a fluorescent bright yellow coloring.

Phenotype	Genotypes		Progeny Count
dewy, xanthic	d	x	263
dewy	d	+	3,635
xanthic	+	x	3,619
wildtype	+	+	283
TOTAL =			7,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

48f3_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene M is linked with the 'mushy' phenotype. A fruit fly that is homozygous recessive for Gene M feels soft to the touch and unusually squishy, unlike the usual firmness.
Gene Y is related to the 'yucky' phenotype. A fruit fly that is homozygous recessive for Gene Y gives off an unpleasant odor and has a generally unappealing look.

Phenotype	Genotypes		Progeny Count
mushy, yucky	m	y	304
mushy	m	+	692
yucky	+	y	668
wildtype	+	+	336
TOTAL =			2,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

3077_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene N is analogous to the 'nerdy' phenotype. A fruit fly that is homozygous recessive for Gene N has large, prominent eyes that stand out, much like thick-rimmed glasses.
Gene P is associated with the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.

Phenotype	Genotypes		Progeny Count
nerdy, prickly	n	p	860
nerdy	n	+	1,355
prickly	+	p	1,329
wildtype	+	+	856
TOTAL =			4,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

2d9d_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene P is affiliated with the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.
Gene T is related to the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.

Phenotype	Genotypes		Progeny Count
prickly, tipsy	p	t	1,376
prickly	p	+	2,336
tipsy	+	t	2,252
wildtype	+	+	1,436
TOTAL =			7,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

9470_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene N is affiliated with the 'nerdy' phenotype. A fruit fly that is homozygous recessive for Gene N has large, prominent eyes that stand out, much like thick-rimmed glasses.
Gene W is associated with the 'waxy' phenotype. A fruit fly that is homozygous recessive for Gene W has a thick protective layer that is water resistant and opague.

Phenotype	Genotypes		Progeny Count
nerdy, waxy	n	w	3,399
nerdy	n	+	1,205
waxy	+	w	1,279
wildtype	+	+	3,317
TOTAL =			9,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

d170_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene A is affiliated with the 'artsy' phenotype. A fruit fly that is homozygous recessive for Gene A has wings that are colorful and distinctive patterns.
Gene E is correlated with the 'eery' phenotype. A fruit fly that is homozygous recessive for Gene E appears to have something off, crooked limbs and other twisted appendages.

Phenotype	Genotypes		Progeny Count
artsy, eery	a	e	751
artsy	a	+	3,523
eery	+	e	3,529
wildtype	+	+	797
TOTAL =			8,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

08e5_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene B is affiliated with the 'bumpy' phenotype. A fruit fly that is homozygous recessive for Gene B has a skin texture that is not smooth, but rough with small bumps all over.
Gene T is linked with the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.

Phenotype	Genotypes		Progeny Count
bumpy, tipsy	b	t	2,026
bumpy	b	+	1,373
tipsy	+	t	1,347
wildtype	+	+	2,054
TOTAL =			6,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

6561_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene D is affiliated with the 'dewy' phenotype. A fruit fly that is homozygous recessive for Gene D appears moist, with its body covered in tiny droplets of water.
Gene F is associated with the 'fuzzy' phenotype. A fruit fly that is homozygous recessive for Gene F is covered in a dense layer of hairs, giving it a soft appearance.

Phenotype	Genotypes		Progeny Count
dewy, fuzzy	d	f	561
dewy	d	+	21
fuzzy	+	f	27
wildtype	+	+	591
TOTAL =			1,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

f175_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene E is related to the 'eery' phenotype. A fruit fly that is homozygous recessive for Gene E appears to have something off, crooked limbs and other twisted appendages.
Gene Y is related to the 'yucky' phenotype. A fruit fly that is homozygous recessive for Gene Y gives off an unpleasant odor and has a generally unappealing look.

Phenotype	Genotypes		Progeny Count
eery, yucky	e	y	145
eery	e	+	361
yucky	+	y	369
wildtype	+	+	125
TOTAL =			1,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

4647_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene C is correlated with the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.
Gene T is analogous to the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.

Phenotype	Genotypes		Progeny Count
chummy, tipsy	c	t	2,934
chummy	c	+	66
tipsy	+	t	54
wildtype	+	+	2,946
TOTAL =			6,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

7ed2_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene A is related to the 'artsy' phenotype. A fruit fly that is homozygous recessive for Gene A has wings that are colorful and distinctive patterns.
Gene B is affiliated with the 'bumpy' phenotype. A fruit fly that is homozygous recessive for Gene B has a skin texture that is not smooth, but rough with small bumps all over.

Phenotype	Genotypes		Progeny Count
artsy, bumpy	a	b	3,760
artsy	a	+	76
bumpy	+	b	80
wildtype	+	+	3,884
TOTAL =			7,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

80c9_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene D is connected with the 'dewy' phenotype. A fruit fly that is homozygous recessive for Gene D appears moist, with its body covered in tiny droplets of water.
Gene X is connected with the 'xanthic' phenotype. A fruit fly that is homozygous recessive for Gene X has a fluorescent bright yellow coloring.

Phenotype	Genotypes		Progeny Count
dewy, xanthic	d	x	3,842
dewy	d	+	921
xanthic	+	x	903
wildtype	+	+	3,934
TOTAL =			9,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

236b_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene B is related to the 'bumpy' phenotype. A fruit fly that is homozygous recessive for Gene B has a skin texture that is not smooth, but rough with small bumps all over.
Gene C is associated with the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.

Phenotype	Genotypes		Progeny Count
bumpy, chummy	b	c	1,049
bumpy	b	+	2,714
chummy	+	c	2,758
wildtype	+	+	1,079
TOTAL =			7,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

1a42_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene E is linked with the 'eery' phenotype. A fruit fly that is homozygous recessive for Gene E appears to have something off, crooked limbs and other twisted appendages.
Gene H is correlated with the 'horsey' phenotype. A fruit fly that is homozygous recessive for Gene H is quite big and strong-looking, much larger than your typical fruit fly.

Phenotype	Genotypes		Progeny Count
eery, horsey	e	h	83
eery	e	+	586
horsey	+	h	660
wildtype	+	+	71
TOTAL =			1,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

d7f8_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene D is correlated with the 'dewy' phenotype. A fruit fly that is homozygous recessive for Gene D appears moist, with its body covered in tiny droplets of water.
Gene T is linked with the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.

Phenotype	Genotypes		Progeny Count
dewy, tipsy	d	t	377
dewy	d	+	1,426
tipsy	+	t	1,418
wildtype	+	+	379
TOTAL =			3,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

05ea_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene M is associated with the 'mushy' phenotype. A fruit fly that is homozygous recessive for Gene M feels soft to the touch and unusually squishy, unlike the usual firmness.
Gene T is correlated with the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.

Phenotype	Genotypes		Progeny Count
mushy, tipsy	m	t	664
mushy	m	+	150
tipsy	+	t	138
wildtype	+	+	648
TOTAL =			1,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

6223_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene K is analogous to the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.
Gene T is analogous to the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.

Phenotype	Genotypes		Progeny Count
kidney, tipsy	k	t	1,377
kidney	k	+	318
tipsy	+	t	362
wildtype	+	+	1,343
TOTAL =			3,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

25e3_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene C is related to the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.
Gene P is affiliated with the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.

Phenotype	Genotypes		Progeny Count
chummy, prickly	c	p	938
chummy	c	+	3,844
prickly	+	p	3,836
wildtype	+	+	982
TOTAL =			9,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

1a29_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene H is correlated with the 'horsey' phenotype. A fruit fly that is homozygous recessive for Gene H is quite big and strong-looking, much larger than your typical fruit fly.
Gene T is linked with the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.

Phenotype	Genotypes		Progeny Count
horsey, tipsy	h	t	979
horsey	h	+	34
tipsy	+	t	26
wildtype	+	+	961
TOTAL =			2,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

a07d_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene B is associated with the 'bumpy' phenotype. A fruit fly that is homozygous recessive for Gene B has a skin texture that is not smooth, but rough with small bumps all over.
Gene J is analogous to the 'jerky' phenotype. A fruit fly that is homozygous recessive for Gene J moves in rapid and sudden movements, displaying an unpredictable flight pattern.

Phenotype	Genotypes		Progeny Count
bumpy, jerky	b	j	1,631
bumpy	b	+	504
jerky	+	j	462
wildtype	+	+	1,603
TOTAL =			4,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

e126_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene A is analogous to the 'artsy' phenotype. A fruit fly that is homozygous recessive for Gene A has wings that are colorful and distinctive patterns.
Gene P is affiliated with the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.

Phenotype	Genotypes		Progeny Count
artsy, prickly	a	p	3,909
artsy	a	+	124
prickly	+	p	116
wildtype	+	+	3,851
TOTAL =			8,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

5945_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene N is correlated with the 'nerdy' phenotype. A fruit fly that is homozygous recessive for Gene N has large, prominent eyes that stand out, much like thick-rimmed glasses.
Gene T is correlated with the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.

Phenotype	Genotypes		Progeny Count
nerdy, tipsy	n	t	3,585
nerdy	n	+	273
tipsy	+	t	259
wildtype	+	+	3,483
TOTAL =			7,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

88c7_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene R is related to the 'rusty' phenotype. A fruit fly that is homozygous recessive for Gene R has a reddish-brown color, much like rusted iron metal.
Gene Y is correlated with the 'yucky' phenotype. A fruit fly that is homozygous recessive for Gene Y gives off an unpleasant odor and has a generally unappealing look.

Phenotype	Genotypes		Progeny Count
rusty, yucky	r	y	1,120
rusty	r	+	3,073
yucky	+	y	2,913
wildtype	+	+	1,094
TOTAL =			8,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

9ac6_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene K is connected with the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.
Gene Y is linked with the 'yucky' phenotype. A fruit fly that is homozygous recessive for Gene Y gives off an unpleasant odor and has a generally unappealing look.

Phenotype	Genotypes		Progeny Count
kidney, yucky	k	y	4,538
kidney	k	+	247
yucky	+	y	233
wildtype	+	+	4,582
TOTAL =			9,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

4f6d_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene B is affiliated with the 'bumpy' phenotype. A fruit fly that is homozygous recessive for Gene B has a skin texture that is not smooth, but rough with small bumps all over.
Gene C is correlated with the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.

Phenotype	Genotypes		Progeny Count
bumpy, chummy	b	c	751
bumpy	b	+	3,928
chummy	+	c	3,968
wildtype	+	+	753
TOTAL =			9,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

ed63_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene N is affiliated with the 'nerdy' phenotype. A fruit fly that is homozygous recessive for Gene N has large, prominent eyes that stand out, much like thick-rimmed glasses.
Gene R is correlated with the 'rusty' phenotype. A fruit fly that is homozygous recessive for Gene R has a reddish-brown color, much like rusted iron metal.

Phenotype	Genotypes		Progeny Count
nerdy, rusty	n	r	691
nerdy	n	+	1,834
rusty	+	r	1,766
wildtype	+	+	709
TOTAL =			5,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

4cb7_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene C is connected with the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.
Gene M is connected with the 'mushy' phenotype. A fruit fly that is homozygous recessive for Gene M feels soft to the touch and unusually squishy, unlike the usual firmness.

Phenotype	Genotypes		Progeny Count
chummy, mushy	c	m	1,326
chummy	c	+	500
mushy	+	m	508
wildtype	+	+	1,266
TOTAL =			3,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

15cb_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene E is affiliated with the 'eery' phenotype. A fruit fly that is homozygous recessive for Gene E appears to have something off, crooked limbs and other twisted appendages.
Gene K is associated with the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.

Phenotype	Genotypes		Progeny Count
eery, kidney	e	k	1,003
eery	e	+	571
kidney	+	k	613
wildtype	+	+	1,013
TOTAL =			3,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

44b1_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene A is connected with the 'artsy' phenotype. A fruit fly that is homozygous recessive for Gene A has wings that are colorful and distinctive patterns.
Gene J is related to the 'jerky' phenotype. A fruit fly that is homozygous recessive for Gene J moves in rapid and sudden movements, displaying an unpredictable flight pattern.

Phenotype	Genotypes		Progeny Count
artsy, jerky	a	j	111
artsy	a	+	452
jerky	+	j	520
wildtype	+	+	117
TOTAL =			1,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

f0f7_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene J is related to the 'jerky' phenotype. A fruit fly that is homozygous recessive for Gene J moves in rapid and sudden movements, displaying an unpredictable flight pattern.
Gene X is correlated with the 'xanthic' phenotype. A fruit fly that is homozygous recessive for Gene X has a fluorescent bright yellow coloring.

Phenotype	Genotypes		Progeny Count
jerky, xanthic	j	x	2,050
jerky	j	+	644
xanthic	+	x	652
wildtype	+	+	2,054
TOTAL =			5,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

bbf8_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene J is connected with the 'jerky' phenotype. A fruit fly that is homozygous recessive for Gene J moves in rapid and sudden movements, displaying an unpredictable flight pattern.
Gene K is analogous to the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.

Phenotype	Genotypes		Progeny Count
jerky, kidney	j	k	1,486
jerky	j	+	2,500
kidney	+	k	2,540
wildtype	+	+	1,474
TOTAL =			8,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

a21c_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene B is related to the 'bumpy' phenotype. A fruit fly that is homozygous recessive for Gene B has a skin texture that is not smooth, but rough with small bumps all over.
Gene C is analogous to the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.

Phenotype	Genotypes		Progeny Count
bumpy, chummy	b	c	737
bumpy	b	+	3,048
chummy	+	c	2,872
wildtype	+	+	743
TOTAL =			7,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

906d_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene P is affiliated with the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.
Gene W is linked with the 'waxy' phenotype. A fruit fly that is homozygous recessive for Gene W has a thick protective layer that is water resistant and opague.

Phenotype	Genotypes		Progeny Count
prickly, waxy	p	w	1,212
prickly	p	+	703
waxy	+	w	741
wildtype	+	+	1,144
TOTAL =			3,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

4880_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene P is linked with the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.
Gene W is connected with the 'waxy' phenotype. A fruit fly that is homozygous recessive for Gene W has a thick protective layer that is water resistant and opague.

Phenotype	Genotypes		Progeny Count
prickly, waxy	p	w	1,578
prickly	p	+	194
waxy	+	w	202
wildtype	+	+	1,626
TOTAL =			3,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

12b7_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene B is related to the 'bumpy' phenotype. A fruit fly that is homozygous recessive for Gene B has a skin texture that is not smooth, but rough with small bumps all over.
Gene Y is linked with the 'yucky' phenotype. A fruit fly that is homozygous recessive for Gene Y gives off an unpleasant odor and has a generally unappealing look.

Phenotype	Genotypes		Progeny Count
bumpy, yucky	b	y	1,523
bumpy	b	+	2,701
yucky	+	y	2,591
wildtype	+	+	1,585
TOTAL =			8,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

b355_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene T is linked with the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.
Gene W is correlated with the 'waxy' phenotype. A fruit fly that is homozygous recessive for Gene W has a thick protective layer that is water resistant and opague.

Phenotype	Genotypes		Progeny Count
tipsy, waxy	t	w	2,933
tipsy	t	+	1,661
waxy	+	w	1,651
wildtype	+	+	2,955
TOTAL =			9,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

1afb_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene M is associated with the 'mushy' phenotype. A fruit fly that is homozygous recessive for Gene M feels soft to the touch and unusually squishy, unlike the usual firmness.
Gene X is correlated with the 'xanthic' phenotype. A fruit fly that is homozygous recessive for Gene X has a fluorescent bright yellow coloring.

Phenotype	Genotypes		Progeny Count
mushy, xanthic	m	x	810
mushy	m	+	518
xanthic	+	x	496
wildtype	+	+	776
TOTAL =			2,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

33cd_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene A is connected with the 'artsy' phenotype. A fruit fly that is homozygous recessive for Gene A has wings that are colorful and distinctive patterns.
Gene T is correlated with the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.

Phenotype	Genotypes		Progeny Count
artsy, tipsy	a	t	520
artsy	a	+	2,873
tipsy	+	t	2,839
wildtype	+	+	568
TOTAL =			6,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

7f1b_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene D is correlated with the 'dewy' phenotype. A fruit fly that is homozygous recessive for Gene D appears moist, with its body covered in tiny droplets of water.
Gene F is associated with the 'fuzzy' phenotype. A fruit fly that is homozygous recessive for Gene F is covered in a dense layer of hairs, giving it a soft appearance.

Phenotype	Genotypes		Progeny Count
dewy, fuzzy	d	f	1,515
dewy	d	+	2,708
fuzzy	+	f	2,668
wildtype	+	+	1,509
TOTAL =			8,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

5828_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene N is correlated with the 'nerdy' phenotype. A fruit fly that is homozygous recessive for Gene N has large, prominent eyes that stand out, much like thick-rimmed glasses.
Gene W is correlated with the 'waxy' phenotype. A fruit fly that is homozygous recessive for Gene W has a thick protective layer that is water resistant and opague.

Phenotype	Genotypes		Progeny Count
nerdy, waxy	n	w	199
nerdy	n	+	2,602
waxy	+	w	2,420
wildtype	+	+	179
TOTAL =			5,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

ac1a_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene M is associated with the 'mushy' phenotype. A fruit fly that is homozygous recessive for Gene M feels soft to the touch and unusually squishy, unlike the usual firmness.
Gene P is affiliated with the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.

Phenotype	Genotypes		Progeny Count
mushy, prickly	m	p	2,245
mushy	m	+	669
prickly	+	p	723
wildtype	+	+	2,163
TOTAL =			5,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

eb01_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene D is correlated with the 'dewy' phenotype. A fruit fly that is homozygous recessive for Gene D appears moist, with its body covered in tiny droplets of water.
Gene N is connected with the 'nerdy' phenotype. A fruit fly that is homozygous recessive for Gene N has large, prominent eyes that stand out, much like thick-rimmed glasses.

Phenotype	Genotypes		Progeny Count
dewy, nerdy	d	n	2,307
dewy	d	+	1,049
nerdy	+	n	1,127
wildtype	+	+	2,317
TOTAL =			6,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

8ec4_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene H is connected with the 'horsey' phenotype. A fruit fly that is homozygous recessive for Gene H is quite big and strong-looking, much larger than your typical fruit fly.
Gene W is related to the 'waxy' phenotype. A fruit fly that is homozygous recessive for Gene W has a thick protective layer that is water resistant and opague.

Phenotype	Genotypes		Progeny Count
horsey, waxy	h	w	615
horsey	h	+	1,512
waxy	+	w	1,470
wildtype	+	+	603
TOTAL =			4,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

7105_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene A is associated with the 'artsy' phenotype. A fruit fly that is homozygous recessive for Gene A has wings that are colorful and distinctive patterns.
Gene P is related to the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.

Phenotype	Genotypes		Progeny Count
artsy, prickly	a	p	127
artsy	a	+	1,080
prickly	+	p	1,080
wildtype	+	+	113
TOTAL =			2,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

a68d_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene A is related to the 'artsy' phenotype. A fruit fly that is homozygous recessive for Gene A has wings that are colorful and distinctive patterns.
Gene C is analogous to the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.

Phenotype	Genotypes		Progeny Count
artsy, chummy	a	c	229
artsy	a	+	771
chummy	+	c	749
wildtype	+	+	251
TOTAL =			2,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

40d1_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene F is connected with the 'fuzzy' phenotype. A fruit fly that is homozygous recessive for Gene F is covered in a dense layer of hairs, giving it a soft appearance.
Gene K is affiliated with the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.

Phenotype	Genotypes		Progeny Count
fuzzy, kidney	f	k	1,705
fuzzy	f	+	2,840
kidney	+	k	2,830
wildtype	+	+	1,625
TOTAL =			9,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

d2f2_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene F is connected with the 'fuzzy' phenotype. A fruit fly that is homozygous recessive for Gene F is covered in a dense layer of hairs, giving it a soft appearance.
Gene J is correlated with the 'jerky' phenotype. A fruit fly that is homozygous recessive for Gene J moves in rapid and sudden movements, displaying an unpredictable flight pattern.

Phenotype	Genotypes		Progeny Count
fuzzy, jerky	f	j	1,068
fuzzy	f	+	3,366
jerky	+	j	3,474
wildtype	+	+	1,092
TOTAL =			9,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

2eb9_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene C is affiliated with the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.
Gene H is affiliated with the 'horsey' phenotype. A fruit fly that is homozygous recessive for Gene H is quite big and strong-looking, much larger than your typical fruit fly.

Phenotype	Genotypes		Progeny Count
chummy, horsey	c	h	1,192
chummy	c	+	1,894
horsey	+	h	1,950
wildtype	+	+	1,164
TOTAL =			6,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

84ef_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene H is affiliated with the 'horsey' phenotype. A fruit fly that is homozygous recessive for Gene H is quite big and strong-looking, much larger than your typical fruit fly.
Gene T is linked with the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.

Phenotype	Genotypes		Progeny Count
horsey, tipsy	h	t	1,648
horsey	h	+	2,872
tipsy	+	t	2,888
wildtype	+	+	1,592
TOTAL =			9,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

93b5_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene A is correlated with the 'artsy' phenotype. A fruit fly that is homozygous recessive for Gene A has wings that are colorful and distinctive patterns.
Gene J is associated with the 'jerky' phenotype. A fruit fly that is homozygous recessive for Gene J moves in rapid and sudden movements, displaying an unpredictable flight pattern.

Phenotype	Genotypes		Progeny Count
artsy, jerky	a	j	394
artsy	a	+	1,149
jerky	+	j	1,219
wildtype	+	+	438
TOTAL =			3,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

a58d_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene P is linked with the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.
Gene T is correlated with the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.

Phenotype	Genotypes		Progeny Count
prickly, tipsy	p	t	1,350
prickly	p	+	357
tipsy	+	t	391
wildtype	+	+	1,302
TOTAL =			3,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

2c00_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene F is correlated with the 'fuzzy' phenotype. A fruit fly that is homozygous recessive for Gene F is covered in a dense layer of hairs, giving it a soft appearance.
Gene X is linked with the 'xanthic' phenotype. A fruit fly that is homozygous recessive for Gene X has a fluorescent bright yellow coloring.

Phenotype	Genotypes		Progeny Count
fuzzy, xanthic	f	x	1,657
fuzzy	f	+	462
xanthic	+	x	420
wildtype	+	+	1,661
TOTAL =			4,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

7207_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene W is correlated with the 'waxy' phenotype. A fruit fly that is homozygous recessive for Gene W has a thick protective layer that is water resistant and opague.
Gene Y is affiliated with the 'yucky' phenotype. A fruit fly that is homozygous recessive for Gene Y gives off an unpleasant odor and has a generally unappealing look.

Phenotype	Genotypes		Progeny Count
waxy, yucky	w	y	280
waxy	w	+	1,111
yucky	+	y	1,101
wildtype	+	+	308
TOTAL =			2,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

67c7_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene W is affiliated with the 'waxy' phenotype. A fruit fly that is homozygous recessive for Gene W has a thick protective layer that is water resistant and opague.
Gene X is related to the 'xanthic' phenotype. A fruit fly that is homozygous recessive for Gene X has a fluorescent bright yellow coloring.

Phenotype	Genotypes		Progeny Count
waxy, xanthic	w	x	3,434
waxy	w	+	1,234
xanthic	+	x	1,250
wildtype	+	+	3,282
TOTAL =			9,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

cb83_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene D is affiliated with the 'dewy' phenotype. A fruit fly that is homozygous recessive for Gene D appears moist, with its body covered in tiny droplets of water.
Gene Y is connected with the 'yucky' phenotype. A fruit fly that is homozygous recessive for Gene Y gives off an unpleasant odor and has a generally unappealing look.

Phenotype	Genotypes		Progeny Count
dewy, yucky	d	y	200
dewy	d	+	1,185
yucky	+	y	1,223
wildtype	+	+	192
TOTAL =			2,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

2087_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene F is related to the 'fuzzy' phenotype. A fruit fly that is homozygous recessive for Gene F is covered in a dense layer of hairs, giving it a soft appearance.
Gene K is related to the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.

Phenotype	Genotypes		Progeny Count
fuzzy, kidney	f	k	88
fuzzy	f	+	481
kidney	+	k	563
wildtype	+	+	68
TOTAL =			1,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

ff4a_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene M is linked with the 'mushy' phenotype. A fruit fly that is homozygous recessive for Gene M feels soft to the touch and unusually squishy, unlike the usual firmness.
Gene N is linked with the 'nerdy' phenotype. A fruit fly that is homozygous recessive for Gene N has large, prominent eyes that stand out, much like thick-rimmed glasses.

Phenotype	Genotypes		Progeny Count
mushy, nerdy	m	n	106
mushy	m	+	1,846
nerdy	+	n	1,764
wildtype	+	+	84
TOTAL =			3,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

be9b_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene K is correlated with the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.
Gene X is affiliated with the 'xanthic' phenotype. A fruit fly that is homozygous recessive for Gene X has a fluorescent bright yellow coloring.

Phenotype	Genotypes		Progeny Count
kidney, xanthic	k	x	765
kidney	k	+	2,309
xanthic	+	x	2,341
wildtype	+	+	785
TOTAL =			6,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

83a2_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene A is associated with the 'artsy' phenotype. A fruit fly that is homozygous recessive for Gene A has wings that are colorful and distinctive patterns.
Gene E is associated with the 'eery' phenotype. A fruit fly that is homozygous recessive for Gene E appears to have something off, crooked limbs and other twisted appendages.

Phenotype	Genotypes		Progeny Count
artsy, eery	a	e	121
artsy	a	+	3,805
eery	+	e	3,761
wildtype	+	+	113
TOTAL =			7,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

dd8b_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene E is linked with the 'eery' phenotype. A fruit fly that is homozygous recessive for Gene E appears to have something off, crooked limbs and other twisted appendages.
Gene W is analogous to the 'waxy' phenotype. A fruit fly that is homozygous recessive for Gene W has a thick protective layer that is water resistant and opague.

Phenotype	Genotypes		Progeny Count
eery, waxy	e	w	1,391
eery	e	+	450
waxy	+	w	450
wildtype	+	+	1,309
TOTAL =			3,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

6c46_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene C is related to the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.
Gene E is connected with the 'eery' phenotype. A fruit fly that is homozygous recessive for Gene E appears to have something off, crooked limbs and other twisted appendages.

Phenotype	Genotypes		Progeny Count
chummy, eery	c	e	275
chummy	c	+	952
eery	+	e	920
wildtype	+	+	253
TOTAL =			2,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

a01f_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene R is related to the 'rusty' phenotype. A fruit fly that is homozygous recessive for Gene R has a reddish-brown color, much like rusted iron metal.
Gene T is connected with the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.

Phenotype	Genotypes		Progeny Count
rusty, tipsy	r	t	1,366
rusty	r	+	144
tipsy	+	t	126
wildtype	+	+	1,364
TOTAL =			3,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

e86f_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene X is correlated with the 'xanthic' phenotype. A fruit fly that is homozygous recessive for Gene X has a fluorescent bright yellow coloring.
Gene Y is affiliated with the 'yucky' phenotype. A fruit fly that is homozygous recessive for Gene Y gives off an unpleasant odor and has a generally unappealing look.

Phenotype	Genotypes		Progeny Count
xanthic, yucky	x	y	650
xanthic	x	+	199
yucky	+	y	217
wildtype	+	+	534
TOTAL =			1,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

a974_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene D is associated with the 'dewy' phenotype. A fruit fly that is homozygous recessive for Gene D appears moist, with its body covered in tiny droplets of water.
Gene T is associated with the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.

Phenotype	Genotypes		Progeny Count
dewy, tipsy	d	t	637
dewy	d	+	1,330
tipsy	+	t	1,390
wildtype	+	+	643
TOTAL =			4,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

c05b_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene D is analogous to the 'dewy' phenotype. A fruit fly that is homozygous recessive for Gene D appears moist, with its body covered in tiny droplets of water.
Gene F is correlated with the 'fuzzy' phenotype. A fruit fly that is homozygous recessive for Gene F is covered in a dense layer of hairs, giving it a soft appearance.

Phenotype	Genotypes		Progeny Count
dewy, fuzzy	d	f	2,710
dewy	d	+	911
fuzzy	+	f	961
wildtype	+	+	2,618
TOTAL =			7,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

c60f_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene H is correlated with the 'horsey' phenotype. A fruit fly that is homozygous recessive for Gene H is quite big and strong-looking, much larger than your typical fruit fly.
Gene T is affiliated with the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.

Phenotype	Genotypes		Progeny Count
horsey, tipsy	h	t	1,902
horsey	h	+	495
tipsy	+	t	513
wildtype	+	+	1,890
TOTAL =			4,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

dd49_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene D is analogous to the 'dewy' phenotype. A fruit fly that is homozygous recessive for Gene D appears moist, with its body covered in tiny droplets of water.
Gene M is associated with the 'mushy' phenotype. A fruit fly that is homozygous recessive for Gene M feels soft to the touch and unusually squishy, unlike the usual firmness.

Phenotype	Genotypes		Progeny Count
dewy, mushy	d	m	1,213
dewy	d	+	781
mushy	+	m	739
wildtype	+	+	1,267
TOTAL =			4,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

41eb_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene D is related to the 'dewy' phenotype. A fruit fly that is homozygous recessive for Gene D appears moist, with its body covered in tiny droplets of water.
Gene J is correlated with the 'jerky' phenotype. A fruit fly that is homozygous recessive for Gene J moves in rapid and sudden movements, displaying an unpredictable flight pattern.

Phenotype	Genotypes		Progeny Count
dewy, jerky	d	j	205
dewy	d	+	1,510
jerky	+	j	1,482
wildtype	+	+	203
TOTAL =			3,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

f16b_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene A is associated with the 'artsy' phenotype. A fruit fly that is homozygous recessive for Gene A has wings that are colorful and distinctive patterns.
Gene H is analogous to the 'horsey' phenotype. A fruit fly that is homozygous recessive for Gene H is quite big and strong-looking, much larger than your typical fruit fly.

Phenotype	Genotypes		Progeny Count
artsy, horsey	a	h	1,477
artsy	a	+	323
horsey	+	h	325
wildtype	+	+	1,475
TOTAL =			3,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

dced_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene D is associated with the 'dewy' phenotype. A fruit fly that is homozygous recessive for Gene D appears moist, with its body covered in tiny droplets of water.
Gene M is associated with the 'mushy' phenotype. A fruit fly that is homozygous recessive for Gene M feels soft to the touch and unusually squishy, unlike the usual firmness.

Phenotype	Genotypes		Progeny Count
dewy, mushy	d	m	198
dewy	d	+	1,787
mushy	+	m	1,813
wildtype	+	+	202
TOTAL =			4,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

0290_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene C is linked with the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.
Gene F is correlated with the 'fuzzy' phenotype. A fruit fly that is homozygous recessive for Gene F is covered in a dense layer of hairs, giving it a soft appearance.

Phenotype	Genotypes		Progeny Count
chummy, fuzzy	c	f	450
chummy	c	+	1,691
fuzzy	+	f	1,669
wildtype	+	+	390
TOTAL =			4,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

0f8d_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene F is correlated with the 'fuzzy' phenotype. A fruit fly that is homozygous recessive for Gene F is covered in a dense layer of hairs, giving it a soft appearance.
Gene P is connected with the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.

Phenotype	Genotypes		Progeny Count
fuzzy, prickly	f	p	647
fuzzy	f	+	2,020
prickly	+	p	2,030
wildtype	+	+	703
TOTAL =			5,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

a1dc_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene B is connected with the 'bumpy' phenotype. A fruit fly that is homozygous recessive for Gene B has a skin texture that is not smooth, but rough with small bumps all over.
Gene K is related to the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.

Phenotype	Genotypes		Progeny Count
bumpy, kidney	b	k	3,110
bumpy	b	+	617
kidney	+	k	675
wildtype	+	+	3,198
TOTAL =			7,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

64b1_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene J is connected with the 'jerky' phenotype. A fruit fly that is homozygous recessive for Gene J moves in rapid and sudden movements, displaying an unpredictable flight pattern.
Gene X is correlated with the 'xanthic' phenotype. A fruit fly that is homozygous recessive for Gene X has a fluorescent bright yellow coloring.

Phenotype	Genotypes		Progeny Count
jerky, xanthic	j	x	2,408
jerky	j	+	457
xanthic	+	x	471
wildtype	+	+	2,464
TOTAL =			5,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

6316_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene F is correlated with the 'fuzzy' phenotype. A fruit fly that is homozygous recessive for Gene F is covered in a dense layer of hairs, giving it a soft appearance.
Gene M is correlated with the 'mushy' phenotype. A fruit fly that is homozygous recessive for Gene M feels soft to the touch and unusually squishy, unlike the usual firmness.

Phenotype	Genotypes		Progeny Count
fuzzy, mushy	f	m	654
fuzzy	f	+	1,633
mushy	+	m	1,679
wildtype	+	+	634
TOTAL =			4,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

855f_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene C is affiliated with the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.
Gene P is connected with the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.

Phenotype	Genotypes		Progeny Count
chummy, prickly	c	p	92
chummy	c	+	593
prickly	+	p	611
wildtype	+	+	104
TOTAL =			1,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

8059_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene C is related to the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.
Gene W is connected with the 'waxy' phenotype. A fruit fly that is homozygous recessive for Gene W has a thick protective layer that is water resistant and opague.

Phenotype	Genotypes		Progeny Count
chummy, waxy	c	w	1,686
chummy	c	+	502
waxy	+	w	510
wildtype	+	+	1,702
TOTAL =			4,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

ffa3_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene H is connected with the 'horsey' phenotype. A fruit fly that is homozygous recessive for Gene H is quite big and strong-looking, much larger than your typical fruit fly.
Gene N is related to the 'nerdy' phenotype. A fruit fly that is homozygous recessive for Gene N has large, prominent eyes that stand out, much like thick-rimmed glasses.

Phenotype	Genotypes		Progeny Count
horsey, nerdy	h	n	991
horsey	h	+	329
nerdy	+	n	295
wildtype	+	+	985
TOTAL =			2,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

b54e_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene C is affiliated with the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.
Gene H is linked with the 'horsey' phenotype. A fruit fly that is homozygous recessive for Gene H is quite big and strong-looking, much larger than your typical fruit fly.

Phenotype	Genotypes		Progeny Count
chummy, horsey	c	h	42
chummy	c	+	1,337
horsey	+	h	1,379
wildtype	+	+	42
TOTAL =			2,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

485e_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene K is affiliated with the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.
Gene N is affiliated with the 'nerdy' phenotype. A fruit fly that is homozygous recessive for Gene N has large, prominent eyes that stand out, much like thick-rimmed glasses.

Phenotype	Genotypes		Progeny Count
kidney, nerdy	k	n	40
kidney	k	+	1,835
nerdy	+	n	1,851
wildtype	+	+	74
TOTAL =			3,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

7053_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene J is linked with the 'jerky' phenotype. A fruit fly that is homozygous recessive for Gene J moves in rapid and sudden movements, displaying an unpredictable flight pattern.
Gene K is connected with the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.

Phenotype	Genotypes		Progeny Count
jerky, kidney	j	k	786
jerky	j	+	2,569
kidney	+	k	2,667
wildtype	+	+	778
TOTAL =			6,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

1cdb_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene P is connected with the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.
Gene W is related to the 'waxy' phenotype. A fruit fly that is homozygous recessive for Gene W has a thick protective layer that is water resistant and opague.

Phenotype	Genotypes		Progeny Count
prickly, waxy	p	w	4,551
prickly	p	+	301
waxy	+	w	275
wildtype	+	+	4,473
TOTAL =			9,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

7427_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene P is linked with the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.
Gene T is related to the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.

Phenotype	Genotypes		Progeny Count
prickly, tipsy	p	t	3,150
prickly	p	+	351
tipsy	+	t	369
wildtype	+	+	3,330
TOTAL =			7,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

012d_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene A is correlated with the 'artsy' phenotype. A fruit fly that is homozygous recessive for Gene A has wings that are colorful and distinctive patterns.
Gene Y is affiliated with the 'yucky' phenotype. A fruit fly that is homozygous recessive for Gene Y gives off an unpleasant odor and has a generally unappealing look.

Phenotype	Genotypes		Progeny Count
artsy, yucky	a	y	407
artsy	a	+	92
yucky	+	y	98
wildtype	+	+	403
TOTAL =			1,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

61ef_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene J is connected with the 'jerky' phenotype. A fruit fly that is homozygous recessive for Gene J moves in rapid and sudden movements, displaying an unpredictable flight pattern.
Gene P is related to the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.

Phenotype	Genotypes		Progeny Count
jerky, prickly	j	p	737
jerky	j	+	459
prickly	+	p	477
wildtype	+	+	727
TOTAL =			2,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

a0f2_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene C is affiliated with the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.
Gene T is associated with the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.

Phenotype	Genotypes		Progeny Count
chummy, tipsy	c	t	656
chummy	c	+	1,234
tipsy	+	t	1,236
wildtype	+	+	674
TOTAL =			3,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

c057_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene E is linked with the 'eery' phenotype. A fruit fly that is homozygous recessive for Gene E appears to have something off, crooked limbs and other twisted appendages.
Gene R is related to the 'rusty' phenotype. A fruit fly that is homozygous recessive for Gene R has a reddish-brown color, much like rusted iron metal.

Phenotype	Genotypes		Progeny Count
eery, rusty	e	r	2,108
eery	e	+	1,159
rusty	+	r	1,217
wildtype	+	+	2,116
TOTAL =			6,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

2018_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene D is correlated with the 'dewy' phenotype. A fruit fly that is homozygous recessive for Gene D appears moist, with its body covered in tiny droplets of water.
Gene E is related to the 'eery' phenotype. A fruit fly that is homozygous recessive for Gene E appears to have something off, crooked limbs and other twisted appendages.

Phenotype	Genotypes		Progeny Count
dewy, eery	d	e	266
dewy	d	+	1,002
eery	+	e	1,052
wildtype	+	+	280
TOTAL =			2,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

b71f_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene E is linked with the 'eery' phenotype. A fruit fly that is homozygous recessive for Gene E appears to have something off, crooked limbs and other twisted appendages.
Gene N is linked with the 'nerdy' phenotype. A fruit fly that is homozygous recessive for Gene N has large, prominent eyes that stand out, much like thick-rimmed glasses.

Phenotype	Genotypes		Progeny Count
eery, nerdy	e	n	846
eery	e	+	424
nerdy	+	n	460
wildtype	+	+	870
TOTAL =			2,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

4c09_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene N is analogous to the 'nerdy' phenotype. A fruit fly that is homozygous recessive for Gene N has large, prominent eyes that stand out, much like thick-rimmed glasses.
Gene W is affiliated with the 'waxy' phenotype. A fruit fly that is homozygous recessive for Gene W has a thick protective layer that is water resistant and opague.

Phenotype	Genotypes		Progeny Count
nerdy, waxy	n	w	130
nerdy	n	+	2,029
waxy	+	w	2,107
wildtype	+	+	134
TOTAL =			4,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

2f87_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene B is linked with the 'bumpy' phenotype. A fruit fly that is homozygous recessive for Gene B has a skin texture that is not smooth, but rough with small bumps all over.
Gene X is affiliated with the 'xanthic' phenotype. A fruit fly that is homozygous recessive for Gene X has a fluorescent bright yellow coloring.

Phenotype	Genotypes		Progeny Count
bumpy, xanthic	b	x	710
bumpy	b	+	2,669
xanthic	+	x	2,703
wildtype	+	+	718
TOTAL =			6,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

a9f2_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene N is connected with the 'nerdy' phenotype. A fruit fly that is homozygous recessive for Gene N has large, prominent eyes that stand out, much like thick-rimmed glasses.
Gene Y is associated with the 'yucky' phenotype. A fruit fly that is homozygous recessive for Gene Y gives off an unpleasant odor and has a generally unappealing look.

Phenotype	Genotypes		Progeny Count
nerdy, yucky	n	y	2,538
nerdy	n	+	1,208
yucky	+	y	1,160
wildtype	+	+	2,494
TOTAL =			7,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

ea52_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene H is correlated with the 'horsey' phenotype. A fruit fly that is homozygous recessive for Gene H is quite big and strong-looking, much larger than your typical fruit fly.
Gene W is analogous to the 'waxy' phenotype. A fruit fly that is homozygous recessive for Gene W has a thick protective layer that is water resistant and opague.

Phenotype	Genotypes		Progeny Count
horsey, waxy	h	w	3,586
horsey	h	+	301
waxy	+	w	323
wildtype	+	+	3,590
TOTAL =			7,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

c8b7_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene P is related to the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.
Gene R is related to the 'rusty' phenotype. A fruit fly that is homozygous recessive for Gene R has a reddish-brown color, much like rusted iron metal.

Phenotype	Genotypes		Progeny Count
prickly, rusty	p	r	1,036
prickly	p	+	266
rusty	+	r	280
wildtype	+	+	1,018
TOTAL =			2,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

96ad_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene H is analogous to the 'horsey' phenotype. A fruit fly that is homozygous recessive for Gene H is quite big and strong-looking, much larger than your typical fruit fly.
Gene Y is analogous to the 'yucky' phenotype. A fruit fly that is homozygous recessive for Gene Y gives off an unpleasant odor and has a generally unappealing look.

Phenotype	Genotypes		Progeny Count
horsey, yucky	h	y	3,002
horsey	h	+	749
yucky	+	y	731
wildtype	+	+	2,918
TOTAL =			7,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

593a_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene E is related to the 'eery' phenotype. A fruit fly that is homozygous recessive for Gene E appears to have something off, crooked limbs and other twisted appendages.
Gene R is affiliated with the 'rusty' phenotype. A fruit fly that is homozygous recessive for Gene R has a reddish-brown color, much like rusted iron metal.

Phenotype	Genotypes		Progeny Count
eery, rusty	e	r	653
eery	e	+	3,274
rusty	+	r	3,200
wildtype	+	+	673
TOTAL =			7,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

3c1e_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene P is related to the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.
Gene T is linked with the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.

Phenotype	Genotypes		Progeny Count
prickly, tipsy	p	t	710
prickly	p	+	164
tipsy	+	t	178
wildtype	+	+	748
TOTAL =			1,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

bd29_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene B is connected with the 'bumpy' phenotype. A fruit fly that is homozygous recessive for Gene B has a skin texture that is not smooth, but rough with small bumps all over.
Gene E is correlated with the 'eery' phenotype. A fruit fly that is homozygous recessive for Gene E appears to have something off, crooked limbs and other twisted appendages.

Phenotype	Genotypes		Progeny Count
bumpy, eery	b	e	1,423
bumpy	b	+	3,184
eery	+	e	3,072
wildtype	+	+	1,521
TOTAL =			9,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

841c_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene M is analogous to the 'mushy' phenotype. A fruit fly that is homozygous recessive for Gene M feels soft to the touch and unusually squishy, unlike the usual firmness.
Gene N is associated with the 'nerdy' phenotype. A fruit fly that is homozygous recessive for Gene N has large, prominent eyes that stand out, much like thick-rimmed glasses.

Phenotype	Genotypes		Progeny Count
mushy, nerdy	m	n	41
mushy	m	+	842
nerdy	+	n	886
wildtype	+	+	31
TOTAL =			1,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

cbd6_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene M is connected with the 'mushy' phenotype. A fruit fly that is homozygous recessive for Gene M feels soft to the touch and unusually squishy, unlike the usual firmness.
Gene P is connected with the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.

Phenotype	Genotypes		Progeny Count
mushy, prickly	m	p	4,010
mushy	m	+	132
prickly	+	p	114
wildtype	+	+	3,944
TOTAL =			8,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

a16b_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene P is connected with the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.
Gene Y is related to the 'yucky' phenotype. A fruit fly that is homozygous recessive for Gene Y gives off an unpleasant odor and has a generally unappealing look.

Phenotype	Genotypes		Progeny Count
prickly, yucky	p	y	2,417
prickly	p	+	374
yucky	+	y	354
wildtype	+	+	2,455
TOTAL =			5,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

ef5e_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene E is connected with the 'eery' phenotype. A fruit fly that is homozygous recessive for Gene E appears to have something off, crooked limbs and other twisted appendages.
Gene P is correlated with the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.

Phenotype	Genotypes		Progeny Count
eery, prickly	e	p	880
eery	e	+	135
prickly	+	p	125
wildtype	+	+	860
TOTAL =			2,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

3c78_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene T is associated with the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.
Gene X is correlated with the 'xanthic' phenotype. A fruit fly that is homozygous recessive for Gene X has a fluorescent bright yellow coloring.

Phenotype	Genotypes		Progeny Count
tipsy, xanthic	t	x	561
tipsy	t	+	40
xanthic	+	x	32
wildtype	+	+	567
TOTAL =			1,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

dca0_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene C is affiliated with the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.
Gene R is affiliated with the 'rusty' phenotype. A fruit fly that is homozygous recessive for Gene R has a reddish-brown color, much like rusted iron metal.

Phenotype	Genotypes		Progeny Count
chummy, rusty	c	r	1,686
chummy	c	+	2,827
rusty	+	r	2,753
wildtype	+	+	1,734
TOTAL =			9,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

ba1f_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene A is analogous to the 'artsy' phenotype. A fruit fly that is homozygous recessive for Gene A has wings that are colorful and distinctive patterns.
Gene D is affiliated with the 'dewy' phenotype. A fruit fly that is homozygous recessive for Gene D appears moist, with its body covered in tiny droplets of water.

Phenotype	Genotypes		Progeny Count
artsy, dewy	a	d	1,233
artsy	a	+	2,080
dewy	+	d	2,012
wildtype	+	+	1,275
TOTAL =			6,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

68fc_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene K is related to the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.
Gene N is related to the 'nerdy' phenotype. A fruit fly that is homozygous recessive for Gene N has large, prominent eyes that stand out, much like thick-rimmed glasses.

Phenotype	Genotypes		Progeny Count
kidney, nerdy	k	n	250
kidney	k	+	1,107
nerdy	+	n	1,161
wildtype	+	+	282
TOTAL =			2,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

dd01_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene F is affiliated with the 'fuzzy' phenotype. A fruit fly that is homozygous recessive for Gene F is covered in a dense layer of hairs, giving it a soft appearance.
Gene P is affiliated with the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.

Phenotype	Genotypes		Progeny Count
fuzzy, prickly	f	p	1,640
fuzzy	f	+	34
prickly	+	p	34
wildtype	+	+	1,692
TOTAL =			3,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

1583_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene F is related to the 'fuzzy' phenotype. A fruit fly that is homozygous recessive for Gene F is covered in a dense layer of hairs, giving it a soft appearance.
Gene K is linked with the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.

Phenotype	Genotypes		Progeny Count
fuzzy, kidney	f	k	398
fuzzy	f	+	1,689
kidney	+	k	1,713
wildtype	+	+	400
TOTAL =			4,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

0a01_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene E is analogous to the 'eery' phenotype. A fruit fly that is homozygous recessive for Gene E appears to have something off, crooked limbs and other twisted appendages.
Gene H is linked with the 'horsey' phenotype. A fruit fly that is homozygous recessive for Gene H is quite big and strong-looking, much larger than your typical fruit fly.

Phenotype	Genotypes		Progeny Count
eery, horsey	e	h	1,795
eery	e	+	2,819
horsey	+	h	2,793
wildtype	+	+	1,793
TOTAL =			9,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

199e_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene F is analogous to the 'fuzzy' phenotype. A fruit fly that is homozygous recessive for Gene F is covered in a dense layer of hairs, giving it a soft appearance.
Gene J is analogous to the 'jerky' phenotype. A fruit fly that is homozygous recessive for Gene J moves in rapid and sudden movements, displaying an unpredictable flight pattern.

Phenotype	Genotypes		Progeny Count
fuzzy, jerky	f	j	626
fuzzy	f	+	287
jerky	+	j	271
wildtype	+	+	616
TOTAL =			1,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

8607_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene W is analogous to the 'waxy' phenotype. A fruit fly that is homozygous recessive for Gene W has a thick protective layer that is water resistant and opague.
Gene X is related to the 'xanthic' phenotype. A fruit fly that is homozygous recessive for Gene X has a fluorescent bright yellow coloring.

Phenotype	Genotypes		Progeny Count
waxy, xanthic	w	x	2,600
waxy	w	+	969
xanthic	+	x	975
wildtype	+	+	2,656
TOTAL =			7,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

a259_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene C is linked with the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.
Gene W is correlated with the 'waxy' phenotype. A fruit fly that is homozygous recessive for Gene W has a thick protective layer that is water resistant and opague.

Phenotype	Genotypes		Progeny Count
chummy, waxy	c	w	66
chummy	c	+	413
waxy	+	w	457
wildtype	+	+	64
TOTAL =			1,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

fbca_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene K is analogous to the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.
Gene X is analogous to the 'xanthic' phenotype. A fruit fly that is homozygous recessive for Gene X has a fluorescent bright yellow coloring.

Phenotype	Genotypes		Progeny Count
kidney, xanthic	k	x	32
kidney	k	+	1,438
xanthic	+	x	1,502
wildtype	+	+	28
TOTAL =			3,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

657d_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene R is linked with the 'rusty' phenotype. A fruit fly that is homozygous recessive for Gene R has a reddish-brown color, much like rusted iron metal.
Gene T is connected with the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.

Phenotype	Genotypes		Progeny Count
rusty, tipsy	r	t	2,610
rusty	r	+	328
tipsy	+	t	310
wildtype	+	+	2,552
TOTAL =			5,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

c956_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene F is affiliated with the 'fuzzy' phenotype. A fruit fly that is homozygous recessive for Gene F is covered in a dense layer of hairs, giving it a soft appearance.
Gene X is correlated with the 'xanthic' phenotype. A fruit fly that is homozygous recessive for Gene X has a fluorescent bright yellow coloring.

Phenotype	Genotypes		Progeny Count
fuzzy, xanthic	f	x	1,661
fuzzy	f	+	36
xanthic	+	x	32
wildtype	+	+	1,671
TOTAL =			3,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

b525_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene K is connected with the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.
Gene T is related to the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.

Phenotype	Genotypes		Progeny Count
kidney, tipsy	k	t	1,151
kidney	k	+	32
tipsy	+	t	40
wildtype	+	+	1,177
TOTAL =			2,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

3df3_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene E is associated with the 'eery' phenotype. A fruit fly that is homozygous recessive for Gene E appears to have something off, crooked limbs and other twisted appendages.
Gene H is correlated with the 'horsey' phenotype. A fruit fly that is homozygous recessive for Gene H is quite big and strong-looking, much larger than your typical fruit fly.

Phenotype	Genotypes		Progeny Count
eery, horsey	e	h	1,372
eery	e	+	142
horsey	+	h	128
wildtype	+	+	1,358
TOTAL =			3,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

dc51_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene A is linked with the 'artsy' phenotype. A fruit fly that is homozygous recessive for Gene A has wings that are colorful and distinctive patterns.
Gene K is connected with the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.

Phenotype	Genotypes		Progeny Count
artsy, kidney	a	k	55
artsy	a	+	774
kidney	+	k	730
wildtype	+	+	41
TOTAL =			1,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

7b0e_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene E is correlated with the 'eery' phenotype. A fruit fly that is homozygous recessive for Gene E appears to have something off, crooked limbs and other twisted appendages.
Gene X is analogous to the 'xanthic' phenotype. A fruit fly that is homozygous recessive for Gene X has a fluorescent bright yellow coloring.

Phenotype	Genotypes		Progeny Count
eery, xanthic	e	x	783
eery	e	+	406
xanthic	+	x	434
wildtype	+	+	777
TOTAL =			2,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

40ce_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene N is associated with the 'nerdy' phenotype. A fruit fly that is homozygous recessive for Gene N has large, prominent eyes that stand out, much like thick-rimmed glasses.
Gene W is correlated with the 'waxy' phenotype. A fruit fly that is homozygous recessive for Gene W has a thick protective layer that is water resistant and opague.

Phenotype	Genotypes		Progeny Count
nerdy, waxy	n	w	954
nerdy	n	+	362
waxy	+	w	314
wildtype	+	+	970
TOTAL =			2,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

86eb_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene D is connected with the 'dewy' phenotype. A fruit fly that is homozygous recessive for Gene D appears moist, with its body covered in tiny droplets of water.
Gene T is associated with the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.

Phenotype	Genotypes		Progeny Count
dewy, tipsy	d	t	15
dewy	d	+	592
tipsy	+	t	584
wildtype	+	+	9
TOTAL =			1,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

c177_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene T is linked with the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.
Gene W is linked with the 'waxy' phenotype. A fruit fly that is homozygous recessive for Gene W has a thick protective layer that is water resistant and opague.

Phenotype	Genotypes		Progeny Count
tipsy, waxy	t	w	4,139
tipsy	t	+	605
waxy	+	w	643
wildtype	+	+	4,213
TOTAL =			9,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

9c0f_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene K is analogous to the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.
Gene M is affiliated with the 'mushy' phenotype. A fruit fly that is homozygous recessive for Gene M feels soft to the touch and unusually squishy, unlike the usual firmness.

Phenotype	Genotypes		Progeny Count
kidney, mushy	k	m	3,500
kidney	k	+	859
mushy	+	m	989
wildtype	+	+	3,452
TOTAL =			8,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

3411_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene D is correlated with the 'dewy' phenotype. A fruit fly that is homozygous recessive for Gene D appears moist, with its body covered in tiny droplets of water.
Gene E is correlated with the 'eery' phenotype. A fruit fly that is homozygous recessive for Gene E appears to have something off, crooked limbs and other twisted appendages.

Phenotype	Genotypes		Progeny Count
dewy, eery	d	e	234
dewy	d	+	1,033
eery	+	e	1,073
wildtype	+	+	260
TOTAL =			2,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

aceb_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene C is linked with the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.
Gene R is connected with the 'rusty' phenotype. A fruit fly that is homozygous recessive for Gene R has a reddish-brown color, much like rusted iron metal.

Phenotype	Genotypes		Progeny Count
chummy, rusty	c	r	813
chummy	c	+	2,075
rusty	+	r	2,101
wildtype	+	+	811
TOTAL =			5,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

7a9e_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene M is connected with the 'mushy' phenotype. A fruit fly that is homozygous recessive for Gene M feels soft to the touch and unusually squishy, unlike the usual firmness.
Gene P is linked with the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.

Phenotype	Genotypes		Progeny Count
mushy, prickly	m	p	667
mushy	m	+	121
prickly	+	p	135
wildtype	+	+	677
TOTAL =			1,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

5d28_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene C is analogous to the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.
Gene T is linked with the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.

Phenotype	Genotypes		Progeny Count
chummy, tipsy	c	t	1,801
chummy	c	+	263
tipsy	+	t	283
wildtype	+	+	1,853
TOTAL =			4,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

9aa3_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene K is correlated with the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.
Gene M is connected with the 'mushy' phenotype. A fruit fly that is homozygous recessive for Gene M feels soft to the touch and unusually squishy, unlike the usual firmness.

Phenotype	Genotypes		Progeny Count
kidney, mushy	k	m	242
kidney	k	+	1,454
mushy	+	m	1,436
wildtype	+	+	268
TOTAL =			3,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

18dc_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene C is linked with the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.
Gene M is affiliated with the 'mushy' phenotype. A fruit fly that is homozygous recessive for Gene M feels soft to the touch and unusually squishy, unlike the usual firmness.

Phenotype	Genotypes		Progeny Count
chummy, mushy	c	m	2,672
chummy	c	+	1,687
mushy	+	m	1,745
wildtype	+	+	2,696
TOTAL =			8,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

edcd_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene A is linked with the 'artsy' phenotype. A fruit fly that is homozygous recessive for Gene A has wings that are colorful and distinctive patterns.
Gene K is correlated with the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.

Phenotype	Genotypes		Progeny Count
artsy, kidney	a	k	3,363
artsy	a	+	1,320
kidney	+	k	1,312
wildtype	+	+	3,405
TOTAL =			9,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

0790_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene B is associated with the 'bumpy' phenotype. A fruit fly that is homozygous recessive for Gene B has a skin texture that is not smooth, but rough with small bumps all over.
Gene C is linked with the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.

Phenotype	Genotypes		Progeny Count
bumpy, chummy	b	c	842
bumpy	b	+	510
chummy	+	c	452
wildtype	+	+	796
TOTAL =			2,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

3269_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene C is connected with the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.
Gene X is analogous to the 'xanthic' phenotype. A fruit fly that is homozygous recessive for Gene X has a fluorescent bright yellow coloring.

Phenotype	Genotypes		Progeny Count
chummy, xanthic	c	x	70
chummy	c	+	924
xanthic	+	x	936
wildtype	+	+	70
TOTAL =			2,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

edec_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene K is correlated with the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.
Gene R is related to the 'rusty' phenotype. A fruit fly that is homozygous recessive for Gene R has a reddish-brown color, much like rusted iron metal.

Phenotype	Genotypes		Progeny Count
kidney, rusty	k	r	935
kidney	k	+	190
rusty	+	r	184
wildtype	+	+	891
TOTAL =			2,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

2037_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene D is connected with the 'dewy' phenotype. A fruit fly that is homozygous recessive for Gene D appears moist, with its body covered in tiny droplets of water.
Gene H is connected with the 'horsey' phenotype. A fruit fly that is homozygous recessive for Gene H is quite big and strong-looking, much larger than your typical fruit fly.

Phenotype	Genotypes		Progeny Count
dewy, horsey	d	h	270
dewy	d	+	1,111
horsey	+	h	1,129
wildtype	+	+	290
TOTAL =			2,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

b776_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene T is correlated with the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.
Gene Y is affiliated with the 'yucky' phenotype. A fruit fly that is homozygous recessive for Gene Y gives off an unpleasant odor and has a generally unappealing look.

Phenotype	Genotypes		Progeny Count
tipsy, yucky	t	y	1,535
tipsy	t	+	988
yucky	+	y	1,040
wildtype	+	+	1,637
TOTAL =			5,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

8f4c_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene R is linked with the 'rusty' phenotype. A fruit fly that is homozygous recessive for Gene R has a reddish-brown color, much like rusted iron metal.
Gene Y is associated with the 'yucky' phenotype. A fruit fly that is homozygous recessive for Gene Y gives off an unpleasant odor and has a generally unappealing look.

Phenotype	Genotypes		Progeny Count
rusty, yucky	r	y	2,889
rusty	r	+	536
yucky	+	y	552
wildtype	+	+	2,823
TOTAL =			6,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

36d0_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene H is connected with the 'horsey' phenotype. A fruit fly that is homozygous recessive for Gene H is quite big and strong-looking, much larger than your typical fruit fly.
Gene K is associated with the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.

Phenotype	Genotypes		Progeny Count
horsey, kidney	h	k	2,285
horsey	h	+	148
kidney	+	k	140
wildtype	+	+	2,227
TOTAL =			4,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

5455_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene K is correlated with the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.
Gene W is connected with the 'waxy' phenotype. A fruit fly that is homozygous recessive for Gene W has a thick protective layer that is water resistant and opague.

Phenotype	Genotypes		Progeny Count
kidney, waxy	k	w	912
kidney	k	+	81
waxy	+	w	79
wildtype	+	+	928
TOTAL =			2,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

1219_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene E is linked with the 'eery' phenotype. A fruit fly that is homozygous recessive for Gene E appears to have something off, crooked limbs and other twisted appendages.
Gene Y is connected with the 'yucky' phenotype. A fruit fly that is homozygous recessive for Gene Y gives off an unpleasant odor and has a generally unappealing look.

Phenotype	Genotypes		Progeny Count
eery, yucky	e	y	2,106
eery	e	+	206
yucky	+	y	208
wildtype	+	+	2,080
TOTAL =			4,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

7f34_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene E is affiliated with the 'eery' phenotype. A fruit fly that is homozygous recessive for Gene E appears to have something off, crooked limbs and other twisted appendages.
Gene W is associated with the 'waxy' phenotype. A fruit fly that is homozygous recessive for Gene W has a thick protective layer that is water resistant and opague.

Phenotype	Genotypes		Progeny Count
eery, waxy	e	w	166
eery	e	+	440
waxy	+	w	448
wildtype	+	+	146
TOTAL =			1,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

2d30_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene M is correlated with the 'mushy' phenotype. A fruit fly that is homozygous recessive for Gene M feels soft to the touch and unusually squishy, unlike the usual firmness.
Gene R is associated with the 'rusty' phenotype. A fruit fly that is homozygous recessive for Gene R has a reddish-brown color, much like rusted iron metal.

Phenotype	Genotypes		Progeny Count
mushy, rusty	m	r	1,605
mushy	m	+	649
rusty	+	r	639
wildtype	+	+	1,707
TOTAL =			4,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

af0e_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene K is associated with the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.
Gene T is connected with the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.

Phenotype	Genotypes		Progeny Count
kidney, tipsy	k	t	903
kidney	k	+	3,275
tipsy	+	t	3,277
wildtype	+	+	945
TOTAL =			8,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

377c_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene F is connected with the 'fuzzy' phenotype. A fruit fly that is homozygous recessive for Gene F is covered in a dense layer of hairs, giving it a soft appearance.
Gene K is correlated with the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.

Phenotype	Genotypes		Progeny Count
fuzzy, kidney	f	k	79
fuzzy	f	+	3,130
kidney	+	k	3,078
wildtype	+	+	113
TOTAL =			6,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

c401_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene E is associated with the 'eery' phenotype. A fruit fly that is homozygous recessive for Gene E appears to have something off, crooked limbs and other twisted appendages.
Gene M is associated with the 'mushy' phenotype. A fruit fly that is homozygous recessive for Gene M feels soft to the touch and unusually squishy, unlike the usual firmness.

Phenotype	Genotypes		Progeny Count
eery, mushy	e	m	3,522
eery	e	+	885
mushy	+	m	875
wildtype	+	+	3,518
TOTAL =			8,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

9097_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene M is analogous to the 'mushy' phenotype. A fruit fly that is homozygous recessive for Gene M feels soft to the touch and unusually squishy, unlike the usual firmness.
Gene W is affiliated with the 'waxy' phenotype. A fruit fly that is homozygous recessive for Gene W has a thick protective layer that is water resistant and opague.

Phenotype	Genotypes		Progeny Count
mushy, waxy	m	w	563
mushy	m	+	2,328
waxy	+	w	2,370
wildtype	+	+	539
TOTAL =			5,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

9efd_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene B is related to the 'bumpy' phenotype. A fruit fly that is homozygous recessive for Gene B has a skin texture that is not smooth, but rough with small bumps all over.
Gene D is affiliated with the 'dewy' phenotype. A fruit fly that is homozygous recessive for Gene D appears moist, with its body covered in tiny droplets of water.

Phenotype	Genotypes		Progeny Count
bumpy, dewy	b	d	73
bumpy	b	+	441
dewy	+	d	429
wildtype	+	+	57
TOTAL =			1,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

989a_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene A is associated with the 'artsy' phenotype. A fruit fly that is homozygous recessive for Gene A has wings that are colorful and distinctive patterns.
Gene C is affiliated with the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.

Phenotype	Genotypes		Progeny Count
artsy, chummy	a	c	3,632
artsy	a	+	459
chummy	+	c	443
wildtype	+	+	3,666
TOTAL =			8,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

b458_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene J is correlated with the 'jerky' phenotype. A fruit fly that is homozygous recessive for Gene J moves in rapid and sudden movements, displaying an unpredictable flight pattern.
Gene N is linked with the 'nerdy' phenotype. A fruit fly that is homozygous recessive for Gene N has large, prominent eyes that stand out, much like thick-rimmed glasses.

Phenotype	Genotypes		Progeny Count
jerky, nerdy	j	n	1,261
jerky	j	+	1,967
nerdy	+	n	2,059
wildtype	+	+	1,313
TOTAL =			6,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

72b5_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene J is related to the 'jerky' phenotype. A fruit fly that is homozygous recessive for Gene J moves in rapid and sudden movements, displaying an unpredictable flight pattern.
Gene K is linked with the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.

Phenotype	Genotypes		Progeny Count
jerky, kidney	j	k	65
jerky	j	+	2,328
kidney	+	k	2,328
wildtype	+	+	79
TOTAL =			4,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

c2cb_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene W is analogous to the 'waxy' phenotype. A fruit fly that is homozygous recessive for Gene W has a thick protective layer that is water resistant and opague.
Gene X is affiliated with the 'xanthic' phenotype. A fruit fly that is homozygous recessive for Gene X has a fluorescent bright yellow coloring.

Phenotype	Genotypes		Progeny Count
waxy, xanthic	w	x	1,945
waxy	w	+	631
xanthic	+	x	565
wildtype	+	+	2,059
TOTAL =			5,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

b915_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene F is linked with the 'fuzzy' phenotype. A fruit fly that is homozygous recessive for Gene F is covered in a dense layer of hairs, giving it a soft appearance.
Gene P is associated with the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.

Phenotype	Genotypes		Progeny Count
fuzzy, prickly	f	p	3,682
fuzzy	f	+	825
prickly	+	p	885
wildtype	+	+	3,608
TOTAL =			9,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

e45f_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene P is correlated with the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.
Gene R is affiliated with the 'rusty' phenotype. A fruit fly that is homozygous recessive for Gene R has a reddish-brown color, much like rusted iron metal.

Phenotype	Genotypes		Progeny Count
prickly, rusty	p	r	1,935
prickly	p	+	980
rusty	+	r	992
wildtype	+	+	1,893
TOTAL =			5,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

8379_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene A is related to the 'artsy' phenotype. A fruit fly that is homozygous recessive for Gene A has wings that are colorful and distinctive patterns.
Gene R is connected with the 'rusty' phenotype. A fruit fly that is homozygous recessive for Gene R has a reddish-brown color, much like rusted iron metal.

Phenotype	Genotypes		Progeny Count
artsy, rusty	a	r	152
artsy	a	+	1,725
rusty	+	r	1,771
wildtype	+	+	152
TOTAL =			3,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

9148_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene C is affiliated with the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.
Gene J is analogous to the 'jerky' phenotype. A fruit fly that is homozygous recessive for Gene J moves in rapid and sudden movements, displaying an unpredictable flight pattern.

Phenotype	Genotypes		Progeny Count
chummy, jerky	c	j	990
chummy	c	+	387
jerky	+	j	425
wildtype	+	+	998
TOTAL =			2,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

4715_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene J is analogous to the 'jerky' phenotype. A fruit fly that is homozygous recessive for Gene J moves in rapid and sudden movements, displaying an unpredictable flight pattern.
Gene Y is linked with the 'yucky' phenotype. A fruit fly that is homozygous recessive for Gene Y gives off an unpleasant odor and has a generally unappealing look.

Phenotype	Genotypes		Progeny Count
jerky, yucky	j	y	870
jerky	j	+	2,403
yucky	+	y	2,481
wildtype	+	+	846
TOTAL =			6,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

1732_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene K is associated with the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.
Gene X is analogous to the 'xanthic' phenotype. A fruit fly that is homozygous recessive for Gene X has a fluorescent bright yellow coloring.

Phenotype	Genotypes		Progeny Count
kidney, xanthic	k	x	1,266
kidney	k	+	67
xanthic	+	x	63
wildtype	+	+	1,204
TOTAL =			2,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

e169_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene B is linked with the 'bumpy' phenotype. A fruit fly that is homozygous recessive for Gene B has a skin texture that is not smooth, but rough with small bumps all over.
Gene D is connected with the 'dewy' phenotype. A fruit fly that is homozygous recessive for Gene D appears moist, with its body covered in tiny droplets of water.

Phenotype	Genotypes		Progeny Count
bumpy, dewy	b	d	1,498
bumpy	b	+	913
dewy	+	d	911
wildtype	+	+	1,478
TOTAL =			4,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

721b_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene A is connected with the 'artsy' phenotype. A fruit fly that is homozygous recessive for Gene A has wings that are colorful and distinctive patterns.
Gene J is analogous to the 'jerky' phenotype. A fruit fly that is homozygous recessive for Gene J moves in rapid and sudden movements, displaying an unpredictable flight pattern.

Phenotype	Genotypes		Progeny Count
artsy, jerky	a	j	925
artsy	a	+	399
jerky	+	j	355
wildtype	+	+	921
TOTAL =			2,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

af61_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene H is related to the 'horsey' phenotype. A fruit fly that is homozygous recessive for Gene H is quite big and strong-looking, much larger than your typical fruit fly.
Gene M is analogous to the 'mushy' phenotype. A fruit fly that is homozygous recessive for Gene M feels soft to the touch and unusually squishy, unlike the usual firmness.

Phenotype	Genotypes		Progeny Count
horsey, mushy	h	m	1,020
horsey	h	+	2,662
mushy	+	m	2,666
wildtype	+	+	1,052
TOTAL =			7,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

17ee_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene A is correlated with the 'artsy' phenotype. A fruit fly that is homozygous recessive for Gene A has wings that are colorful and distinctive patterns.
Gene R is related to the 'rusty' phenotype. A fruit fly that is homozygous recessive for Gene R has a reddish-brown color, much like rusted iron metal.

Phenotype	Genotypes		Progeny Count
artsy, rusty	a	r	1,478
artsy	a	+	2,937
rusty	+	r	2,871
wildtype	+	+	1,514
TOTAL =			8,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

569c_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene H is linked with the 'horsey' phenotype. A fruit fly that is homozygous recessive for Gene H is quite big and strong-looking, much larger than your typical fruit fly.
Gene K is correlated with the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.

Phenotype	Genotypes		Progeny Count
horsey, kidney	h	k	2,018
horsey	h	+	743
kidney	+	k	769
wildtype	+	+	2,070
TOTAL =			5,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

2558_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene K is affiliated with the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.
Gene T is related to the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.

Phenotype	Genotypes		Progeny Count
kidney, tipsy	k	t	1,828
kidney	k	+	1,108
tipsy	+	t	1,038
wildtype	+	+	1,826
TOTAL =			5,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

fe84_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene K is analogous to the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.
Gene M is related to the 'mushy' phenotype. A fruit fly that is homozygous recessive for Gene M feels soft to the touch and unusually squishy, unlike the usual firmness.

Phenotype	Genotypes		Progeny Count
kidney, mushy	k	m	1,211
kidney	k	+	1,852
mushy	+	m	1,808
wildtype	+	+	1,129
TOTAL =			6,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

2fc1_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene P is connected with the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.
Gene T is analogous to the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.

Phenotype	Genotypes		Progeny Count
prickly, tipsy	p	t	144
prickly	p	+	1,466
tipsy	+	t	1,478
wildtype	+	+	112
TOTAL =			3,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

50ec_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene E is analogous to the 'eery' phenotype. A fruit fly that is homozygous recessive for Gene E appears to have something off, crooked limbs and other twisted appendages.
Gene N is analogous to the 'nerdy' phenotype. A fruit fly that is homozygous recessive for Gene N has large, prominent eyes that stand out, much like thick-rimmed glasses.

Phenotype	Genotypes		Progeny Count
eery, nerdy	e	n	2,471
eery	e	+	989
nerdy	+	n	971
wildtype	+	+	2,569
TOTAL =			7,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

3382_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene N is associated with the 'nerdy' phenotype. A fruit fly that is homozygous recessive for Gene N has large, prominent eyes that stand out, much like thick-rimmed glasses.
Gene Y is related to the 'yucky' phenotype. A fruit fly that is homozygous recessive for Gene Y gives off an unpleasant odor and has a generally unappealing look.

Phenotype	Genotypes		Progeny Count
nerdy, yucky	n	y	441
nerdy	n	+	3,093
yucky	+	y	3,171
wildtype	+	+	495
TOTAL =			7,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

ed39_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene A is related to the 'artsy' phenotype. A fruit fly that is homozygous recessive for Gene A has wings that are colorful and distinctive patterns.
Gene H is associated with the 'horsey' phenotype. A fruit fly that is homozygous recessive for Gene H is quite big and strong-looking, much larger than your typical fruit fly.

Phenotype	Genotypes		Progeny Count
artsy, horsey	a	h	2,255
artsy	a	+	451
horsey	+	h	467
wildtype	+	+	2,227
TOTAL =			5,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

4ea2_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene F is connected with the 'fuzzy' phenotype. A fruit fly that is homozygous recessive for Gene F is covered in a dense layer of hairs, giving it a soft appearance.
Gene X is connected with the 'xanthic' phenotype. A fruit fly that is homozygous recessive for Gene X has a fluorescent bright yellow coloring.

Phenotype	Genotypes		Progeny Count
fuzzy, xanthic	f	x	2,547
fuzzy	f	+	577
xanthic	+	x	539
wildtype	+	+	2,537
TOTAL =			6,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

7237_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene A is affiliated with the 'artsy' phenotype. A fruit fly that is homozygous recessive for Gene A has wings that are colorful and distinctive patterns.
Gene K is related to the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.

Phenotype	Genotypes		Progeny Count
artsy, kidney	a	k	660
artsy	a	+	138
kidney	+	k	134
wildtype	+	+	668
TOTAL =			1,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

c4d5_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene A is linked with the 'artsy' phenotype. A fruit fly that is homozygous recessive for Gene A has wings that are colorful and distinctive patterns.
Gene K is analogous to the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.

Phenotype	Genotypes		Progeny Count
artsy, kidney	a	k	284
artsy	a	+	445
kidney	+	k	437
wildtype	+	+	234
TOTAL =			1,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

df43_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene K is associated with the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.
Gene R is connected with the 'rusty' phenotype. A fruit fly that is homozygous recessive for Gene R has a reddish-brown color, much like rusted iron metal.

Phenotype	Genotypes		Progeny Count
kidney, rusty	k	r	3,087
kidney	k	+	1,245
rusty	+	r	1,219
wildtype	+	+	3,249
TOTAL =			8,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

ddda_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene H is connected with the 'horsey' phenotype. A fruit fly that is homozygous recessive for Gene H is quite big and strong-looking, much larger than your typical fruit fly.
Gene K is connected with the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.

Phenotype	Genotypes		Progeny Count
horsey, kidney	h	k	2,771
horsey	h	+	1,053
kidney	+	k	1,075
wildtype	+	+	2,701
TOTAL =			7,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

9d77_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene H is linked with the 'horsey' phenotype. A fruit fly that is homozygous recessive for Gene H is quite big and strong-looking, much larger than your typical fruit fly.
Gene P is associated with the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.

Phenotype	Genotypes		Progeny Count
horsey, prickly	h	p	1,414
horsey	h	+	407
prickly	+	p	385
wildtype	+	+	1,394
TOTAL =			3,600

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

4710_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene B is connected with the 'bumpy' phenotype. A fruit fly that is homozygous recessive for Gene B has a skin texture that is not smooth, but rough with small bumps all over.
Gene N is connected with the 'nerdy' phenotype. A fruit fly that is homozygous recessive for Gene N has large, prominent eyes that stand out, much like thick-rimmed glasses.

Phenotype	Genotypes		Progeny Count
bumpy, nerdy	b	n	418
bumpy	b	+	1,267
nerdy	+	n	1,283
wildtype	+	+	432
TOTAL =			3,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

d5ac_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene C is analogous to the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.
Gene P is linked with the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.

Phenotype	Genotypes		Progeny Count
chummy, prickly	c	p	1,188
chummy	c	+	2,160
prickly	+	p	2,192
wildtype	+	+	1,260
TOTAL =			6,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

34f1_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene C is linked with the 'chummy' phenotype. A fruit fly that is homozygous recessive for Gene C shows behavior where it always maintains a close distance to other flies.
Gene M is related to the 'mushy' phenotype. A fruit fly that is homozygous recessive for Gene M feels soft to the touch and unusually squishy, unlike the usual firmness.

Phenotype	Genotypes		Progeny Count
chummy, mushy	c	m	930
chummy	c	+	1,513
mushy	+	m	1,415
wildtype	+	+	942
TOTAL =			4,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

e0b7_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene B is analogous to the 'bumpy' phenotype. A fruit fly that is homozygous recessive for Gene B has a skin texture that is not smooth, but rough with small bumps all over.
Gene T is affiliated with the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.

Phenotype	Genotypes		Progeny Count
bumpy, tipsy	b	t	495
bumpy	b	+	81
tipsy	+	t	87
wildtype	+	+	537
TOTAL =			1,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

3332_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene N is analogous to the 'nerdy' phenotype. A fruit fly that is homozygous recessive for Gene N has large, prominent eyes that stand out, much like thick-rimmed glasses.
Gene T is connected with the 'tipsy' phenotype. A fruit fly that is homozygous recessive for Gene T moves in an erratic path, suggesting a lack of coordination, as if intoxicated.

Phenotype	Genotypes		Progeny Count
nerdy, tipsy	n	t	1,833
nerdy	n	+	835
tipsy	+	t	839
wildtype	+	+	1,893
TOTAL =			5,400

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

6af4_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene J is affiliated with the 'jerky' phenotype. A fruit fly that is homozygous recessive for Gene J moves in rapid and sudden movements, displaying an unpredictable flight pattern.
Gene X is affiliated with the 'xanthic' phenotype. A fruit fly that is homozygous recessive for Gene X has a fluorescent bright yellow coloring.

Phenotype	Genotypes		Progeny Count
jerky, xanthic	j	x	819
jerky	j	+	3,657
xanthic	+	x	3,723
wildtype	+	+	801
TOTAL =			9,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

3e02_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene D is related to the 'dewy' phenotype. A fruit fly that is homozygous recessive for Gene D appears moist, with its body covered in tiny droplets of water.
Gene W is associated with the 'waxy' phenotype. A fruit fly that is homozygous recessive for Gene W has a thick protective layer that is water resistant and opague.

Phenotype	Genotypes		Progeny Count
dewy, waxy	d	w	1,336
dewy	d	+	2,211
waxy	+	w	2,253
wildtype	+	+	1,400
TOTAL =			7,200

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

6586_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene D is connected with the 'dewy' phenotype. A fruit fly that is homozygous recessive for Gene D appears moist, with its body covered in tiny droplets of water.
Gene K is associated with the 'kidney' phenotype. A fruit fly that is homozygous recessive for Gene K has a body shape that is curved, similar to a kidney bean.

Phenotype	Genotypes		Progeny Count
dewy, kidney	d	k	2,731
dewy	d	+	1,729
kidney	+	k	1,781
wildtype	+	+	2,759
TOTAL =			9,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Correct trans Incorrect both Incorrect neither Incorrect cannot be determined Incorrect MC

6652_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene B is connected with the 'bumpy' phenotype. A fruit fly that is homozygous recessive for Gene B has a skin texture that is not smooth, but rough with small bumps all over.
Gene P is analogous to the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.

Phenotype	Genotypes		Progeny Count
bumpy, prickly	b	p	292
bumpy	b	+	1,161
prickly	+	p	1,239
wildtype	+	+	308
TOTAL =			3,000

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect MC

398b_b2bd

Two-Point Test Cross Problem

A standard two-point test cross involves crossing a heterozygous organism for both genes with an organism that is homozygous recessive for both genes

For this problem, a test cross using a fruit fly (Drosophila melanogaster) heterozygous for two genes was conducted to understand their genetic interactions.

Characteristics of Recessive Phenotypes

Gene E is affiliated with the 'eery' phenotype. A fruit fly that is homozygous recessive for Gene E appears to have something off, crooked limbs and other twisted appendages.
Gene P is analogous to the 'prickly' phenotype. A fruit fly that is homozygous recessive for Gene P is covered with sharp bristles, giving it a spiky texture.

Phenotype	Genotypes		Progeny Count
eery, prickly	e	p	531
eery	e	+	2,891
prickly	+	p	2,821
wildtype	+	+	557
TOTAL =			6,800

The phenotype counts resulting from the cross are summarized in the table above.

Question

cis Incorrect trans Correct both Incorrect neither Incorrect cannot be determined Incorrect