When flies having a gray body and normal wings were crossed with flies having a black body and vestigial wings, the f2 generation showed a phenotypic ratio of 3: 1, and not 9: 3: 3: 1. which of the following could be a correct explanation for this ratio? a. genes for body color and wing size were on the same chromosome and inherited together. b. genes for body color and wing size assort independently. c. genes for body color and wing size are inherited separately from each parent. reset