Several populations of copepods are sampled for variation at the G locus. Population A is found to be 30 percent GG, 60 percent Gg, and 10 percent gg. Population B is 62 percent GG, 36 percent Gg, and 2 percent gg. Population C is 30 percent GG, 40 percent Gg, and 30 percent gg. Which population shows a heterozygote deficiency?