Question

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

• A. $q^2$
• B. $p^2$
• C. $2\mathrm{pq}$
• D. $\mathrm{pq}$

Answer 1

The correct option is C $2\mathrm{pq}$

Hardy-Weinberg principle states that the allele frequencies in a population are stable and remain constant from generation to generation. This can be expressed by the equation:

$p^2+2\mathrm{pq}+q^2=1$ or ${(p+q)}^2=1$

where, $p^2$ represents the frequency of individuals with homozygous dominant genotype,
$2\mathrm{pq}$ represents the frequency of individuals with heterozygous genotype and
$q^2$ represents the frequency of individuals with recessive genotype.

Hence, the correct answer is option C.