Which of the following is true about spring tides but is not true about neap tides?
they must occur during a new moon in spring
they occur during the moon's first quarter and third quarter phases
they only occur during a full moon
they can occur twice a month or during a new or full moon

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.