Question

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

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

Answer 1

The correct option is D $2pq$

In Hardy - Weinberg equaion, p² represents the frequency of the homozygous genotype AA,
q²represents the frequency of the homozygous genotype aa, and
2pq represents the frequency of the heterozygous genotype Aa.
In addition, the sum of the allele frequencies for all the alleles at the locus must be 1, so p + q = 1.