A locus has two alleles.The frequency of heterozygotes in a population at Hardy-Weinberg equilibrium is 0.32.What is the frequency of the more common of the two alleles?
A) 0.9
B) 0.8
C) 0.64
D) 0.32
E) 0.16

Question

Quizplus · Accepted Answer

The frequency of heterozygotes in a Hardy-Weinberg population is given by 2pq, where p and q are the frequencies of the two alleles. If 2pq = 0.32, then pq = 0.16. Since p + q = 1, we can solve for p or q. Assuming p is the more common allele, p = 1 - q. Substituting pq = 0.16, we find that p = 0.8, making it the frequency of the more common allele.

A Locus Has Two Alleles