Question

In Hardy-Weinberg equation, the frequency of heterozygous individual is represented by

• A. pq
• B. $q^2$
• C. $p^2$
• D. $2$pq

Answer 1

Answer: (D)

$2$pq

Hardy-Weinberg equation is $p^2$ + 2pq + $q^2$ = 1. Here, p is the frequency of the "A" allele and q is the frequency of the "a" allele in the population. Thus, $p^2$ represents the frequency of the homozygous genotype AA, $q^2$ is the frequency of the homozygous genotype aa, and 2pq represents the frequency of the heterozygous genotype Aa.