10: Population Genetics
Students calculate allele and genotype frequencies in populations, apply the Hardy-Weinberg equation, and evaluate factors that change allele frequencies.
LibreTexts reference: Chapter 10: Population Genetics 
Matching Population Genetic Terms
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Match each of the following population genetic terms with their corresponding definitions.
Note: Each choice will be used exactly once.
| Your Choice | Prompt | |
|---|---|---|
| 1. genetic drift | ||
| 2. gene flow | ||
| 3. random mating | ||
| 4. consanguineous mating | ||
| 5. assortative mating |
Drag one of the choices below:
- A. a random change in the allele frequencies within a population
- B. movement of alleles between populations
- C. mating between individuals with similar phenotypes
- D. mating in which every individual has an equal chance of pairing with any compatible mate
- E. mating between genetically related individuals
True/False Statements About Hardy-Weinberg Equilibrium Conditions
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Which one of the following statements is TRUE regarding Hardy-Weinberg equilibrium conditions for non-evolving populations?
Population Genetics Terms from Definitions
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Which one of the following population genetic terms correspond to the definition 'unpredictable changes in the nucleotides that form a DNA sequence'.
Hardy-Weinberg Variables from Population Data
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In the tropical rainforest population of butterflies, there is a display of incomplete dominance in wing color. Individuals with two D alleles exhibit black, those with one D allele and one d allele exhibit gray, and those with two d alleles exhibit white.
A group of 625 butterflies were observed. 529 exhibited the black wing color, 92 had the gray wing color, and 4 showed the recessive form of white wing color.
Which Hardy-Weinberg variable is represented by the fraction
| 529 |
| 625 |
Which Hardy-Weinberg variable is represented by the fraction 529/625?
Hardy-Weinberg Allele and Genotype Frequencies from Population Data (Numeric)
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| frogs | ||
|---|---|---|
| genotype | phenotype | count |
| homozygous dominant | blue | 65,600 |
| heterozygous | green | 28,799 |
| homozygous recessive | yellow | 5,600 |
| SUM | 99,999 | |
In a field there are 65,600 blue frogs, 28,799 green frogs, and 5,600 yellow frogs that show incomplete dominance. What is the frequency of the dominant allele?
Note: Do not enter a percentage on the blank. For example, if the answer is 65.8%, enter 0.658 on the blank. Your answer will be a decimal value between 0 and 1.