A donkey and a beetle both use legs for locomotion, but the donkey has an internal bony skeleton while the beetle has an exoskeleton made of chitin. Which of the statements accurately describe the relationship between the donkey and beetle?

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.