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