1. Simple diffusion is defined as the movement of
OA) molecules from areas of higher concentration to areas of lower
concentration
B) molecules from areas of lower concentration to areas of higher
concentration.
C)
water molecules across a membrane.
D) gas molecules across a membrane.
OE) gas or water molecules across a membrane.

14) 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.