Red-green color blindness in humans is inherited as an X-linked recessive condition. Consider reciprocal matings between a color-blind parent and a parent with normal color vision in which the dominant allele is identified as C and the recessive allele as c.
Mating I is Cc×cY.
Mating II is cc×CY.
Part A
Determine the phenotypes and their proportions in progeny produced by mating I. Choose either 1, 2, 3, or 4.
Part B
Determine the phenotypes and their proportions in progeny produced by mating II. Choose 1, 2, 3, or 4.