Choose the most appropriate letter for each.
-balanced polymorphism

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