Consider a Population of 20 Aa, 32 Aa, and 48

Multiple Choice

Consider a population of 20 aa, 32 Aa, and 48 AA individuals. Selection acts against the lethal recessive homozygote (aa) before adulthood. After selection, survivors mate randomly. What are the genotypic frequencies of the next generation?

A) 25% aa, 50% Aa, and 25% AA
B) all AA
C) 4% aa, 16% Aa, and 64% AA
D) 4% aa, 64% Aa, and 16% AA