Etrograde transport . Multiple Choice moves toward the cell body moves membranes, vesicles, and viruses uses molecular motor proteins of dynein All of the choices are correct.

Which statement about variation is true? a) all phenotypic variation is the result of genotypic variation.b) all genetic variation produces phenotypic variation.c) all nucleotide variability results in neutral variation.d) all new alleles are the result of nucleotide variability.e) all geographic variation results from the existence of clines.