Question

The relative fitness values of three genotypes are: wAA = 1.0, wAa = 1.0, and waa = 0.7. If the population starts at the allele frequency p = 0.5, what is the value of p in the next generation?

a) 0.7

b) 0.5

c) 0.6

d) 1.0

Answer 1

The frequency of the AA genotype in the next generation is 0.25 (or 25%).

Step-by-step explanation:

The genotype frequencies for the three genotypes are:

p² = Frequency of genotype AA
2pq = Frequency of genotype Aa
q² = Frequency of genotype aa

Given that p = 0.5, we can calculate the genotype frequencies:

p² = (0.5)² = 0.25
2pq = 2(0.5)(0.5) = 0.5
q² = (0.5)² = 0.25

Therefore, the frequency of the AA genotype in the next generation is 0.25 (or 25%).