Hardy Weinberg Questions

Topics: Allele, Zygosity, Phenylketonuria Pages: 3 (800 words) Published: March 7, 2013
Hardy-Weinberg PrincipleName: _______________________________ Period: ____

Show all work and box your answer for each of the following questions! 1. In a population at genetic equilibrium, the frequency of allele A is 0.5. a. What is the frequency of the homozygous dominant genotype (AA)? b. What is the frequency of the heterozygous genotype (Aa)?

2. If 16% of the individuals in a population at genetic equilibrium are recessive (aa). a. What is the frequency of the recessive allele in the population? b. What is the frequency of the dominant allele?

3. If the genotype frequencies in a population at genetic equilibrium are 0.36 TT, 0.48 Tt, and 0.16 tt, what are the allele frequencies of T and t?

4. If the genotype frequencies in a population at genetic equilibrium are 0.64 TT, 0.32 Tt, and 0.04 tt, what are the allele frequencies for T and t?

5. The frequency of the allele A in a population at genetic equilibrium is 0.7. What is the expected frequency of the Aa genotype?

6. In a certain flock of sheep, 4% of the population has black wool and 96% has white wool. Black wool is a recessive trait. Assume that the population is in Hardy-Weinberg equilibrium. a. What is q2?

b. What is the recessive allele frequency?
c. What is the dominant allele frequency?
d. What percentage of the population is heterozygous for white wool? e. What percentage of the population is homozygous for white wool?

7. In a population that is in Hardy-Weinberg equilibrium, 1% of the individuals show the recessive trait. What is the frequency of the dominant allele in the population?

8. In a population with two alleles for a particular trait, B and b, the allele frequency of B is 0.7. What would be the frequency of the heterozygous individuals if the population were in...
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