In DNA, the designations 3' and refer to the
A)carbon or nitrogen atoms on the rings of purine or pyrimidine bases.
B)bonding between purines and deoxyribose and between pyrimidines and deoxyribose.
C)cross-linking of the third and fifth carbon atoms of deoxyribose.
D)carbon atoms of deoxyribose to which phosphate groups may bond.
E)bonds that form between adenine and thymine and between guanine and cytosine.

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.