Which is one of the most important differences between prokaryotes and eukaryotes?
a. the cytoplasm in eukaryotes does not contain any organelles but that prokaryotes does
b. eukaryotes are much smaller than prokaryotes
c. prokaryotes do not have a well defined nucleus, but eukaryotes do

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.