If the frequency of the HbS allele is 02 in a population wha

If the frequency of the HbS allele is 0.2 in a population, what is the frequency of the HbA allele (assuming this is a two-allele system)?

Solution

According to hardy weinbergs equation, p +q = 1

p = 1-q

or p = 1-0.2

or p = 0.8

So the frequency of the HbA allele is 0.8.