genetics question which rule of probability is designated by

Solution

p is the frequency of the \"A\" allele

and

q is the frequency of the \"a\" allele     in the population

(A+B)^2=A^2 +2AB+B^2

(p+q)^2 = p² + 2pq + q² = 1

p² =the probability of the homozygous genotype AA,

q² =the probability of the homozygous genotype aa,

and

2pq =the probability of the heterozygous genotype Aa