and 47. Feather colour for Andulusian fowl is governed by incomplete dominance of a pair of alleles. Fowl may have black, white, or blue feathers. Blue-feathered birds are heterozygous. 46. When a black-feathered hen is mated with a white-feathered rooster, what feather colour will the offspring have? A. All will have black feathers. B. Some will have black feathers and some will have white feathers. C. All will have blue feathers. D. Some will have black, some will have white, and some will have blue feathers. 7. In a cross between a blue-feathered rooster and a white-feathered hen, what percentage of the offspring are expected to be white-feathered? (Record your answer as a whole number percentage.)