Ahuman red blood cell in an artery of the left arm is on its way to deliver oxygen to a cell in the thumb. from this point in the artery, how many capillary beds must this red blood cell pass through before it returns to the left ventricle of the heart?

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.