If there are two alleles A and B and the genotype frequencie

If there are two alleles, A and B, and the genotype frequencies are 80% AA, 4% AB, and 16% BB, what is the frequency of the B allele?

Solution

Answer: The frequency of the B allele = 0.4

The given percentages show that the progeny do not follow Hardy-Weinberg equation.

So the the frequency of BB= 16/100 = 0.16

The frequency of allele B = 0.4