Choose the Most Appropriate Letter for Each

Multiple Choice

Choose the most appropriate letter for each.
-directional selection

A) a reference point that implies stability of gene frequencies through generations
B) a hallmark is reproductive isolation from other groups
C) the genes of an entire population
D) the frequency of homozygous dominants in a population
E) the frequencies of dominant and recessive alleles in a population
F) the frequency of heterozygotes in a population
G) the frequency of homozygous recessives in a population
H) selection that occurs in environments favorable to heterozygotes
I) results in pesticide-resistant pests