If a population of 1000 individuals has 120 aa genotypes, 460 Aa genotypes, and 420 AA genotypes, what is the allele frequency of the dominant allele (A)?
A) 0.16
B) 0.43
C) 0.50
D) 0.65
E) 0.88

Question

Quizplus · Accepted Answer

The frequency of the dominant allele (A) can be calculated by taking the sum of the homozygous dominant (AA) and half of the heterozygous (Aa) genotypes, then dividing by the total number of alleles. This gives (2*420 + 460) / (2*1000) = 1300 / 2000 = 0.65.

If a Population of 1000 Individuals Has 120 Aa Genotypes