In Drosophila melanogaster body color is controlled by one gene while wing shape is controlled by a second gene.

In Drosophila melanogaster body color is controlled by one gene while wing shape is controlled by a second gene. Gray body color is dominant to black body color, and normal wings are dominant to vestigial wings. Flies homozygous for gray body color and vestigial wings are crossed with flies homozygous for black body color and normal wings

A. Compare the possible F_2 generation phenotypes and proportions if these two traits are autosomally linked in comparison to the non-linked condition

B. How does your answer change if one of the original parents is homozygous for gray body color and normal wings while the other has black body color and vestigial wings