It is your job to group these four animals based on like features. First you group the animals by size: very large and not very large. Into the very large group you put the giraffe and elephant. You are left with the lion and alligator. What feature could you use to put these two animals into different groups?

Whenever diploid populations are in hardy-weinberg equilibrium at a particular locus a) the allele's frequency should not change from one generation to the next, but its representation in homozygous and heterozygous genotypes may change. b) natural selection, gene flow, and genetic drift are acting equally to change an allele's frequency. c) this means that, at this locus, two alleles are present in equal proportions. d) the population itself is not evolving, but individuals within the population may be evolving.