Within a population of butterflies, 36% of the individuals are white with a homozygous dominant genotype (AA). Calculate the frequencies of the aa and Aa genotypes.

• A. aa = 0.60; Aa = 0.40
• B. aa = 0.36: Aa = 0.48
• C. aa = 0.16; Aa = 0.36
• D. aa = 0.16; Aa = 0.48

Answer: (D)