Practice!

Sample Problem

Based on the Hardy-Weinberg theory, which of the following represents a homozygous recessive individual?

Solution

(D) is the correct answer. Remember (B) q represents a recessive allele, so q2 is a homozygous recessive individual. (A) p is the dominant allele, so (C) p2 is homozygous dominant individual and (E) is the heterozygous individual.