Question

The recessive allele ‘b’ occurs with a frequency of 0.8 in a population of moths that is in Hardy Weinberg Equilibrium. What is the frequency of homozygous dominant individuals?

Answer 1

Let the frequency of recessive allele b = q = 0.8

So, frequency of dominant allele B = p = 1 − q

= 1 − 0.8

= 0.2

Frequency of homozygous dominant (BB) individuals:

p² = (0.2)² = 0.04

Therefore, the frequency of homozygous dominant (BB) individuals is 0.04 or 4%.