Consider a gene that affects fur colour in mice. This gene has two alleles, A and A. If AA mice have white fur, Aa mice have grey fur, and aa mice have black fur, how would we describe the effect of these alleles?

Question

Quizplus · Accepted Answer

The alleles A and a are codominant because the heterozygous Aa mice have a phenotype (grey fur) that is distinct from both homozygous phenotypes (white fur for AA and black fur for aa).

Consider a Gene That Affects Fur Colour in Mice