These little bunnies (A, B, and C) were born in the same litter to the same parents, but they have different traits for the feature of ear thickness. Bunny A has thick ears, bunny B has average ears, and bunny C has thin ears. How did these bunnles end up with ear thicknesses that are different from one another even though they have the same parents? How did the gene combinations result in the different tralts?​