The nurse has administered promethazine intravenously to a client in active labor. the drug has had the desired effect when the nurse notes:

Define adaptation. why do organisms adapt? give an example.

What blood vessels carry blood to the heart? away from the heart?

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.