A woman with normal vision, but whose father was colourblind, marries a colourblind man. Suppose that the fourth child of this couple was a boy. This boy

Question

A woman with normal vision, but whose father was colourblind, marries a colourblind man. Suppose that the fourth child of this couple was a boy. This boy, must have normal colour vision, will be partially colourblind since he is heterozygous for the colourblind mutant allele, must be colourblind, may be colourblind or may be of normal vision

MARKS App · Accepted Answer

Colourblindness is a sex linked (X-linked) trait. It always transfers from mother to son. A woman, whose father was colourblind, will cross be carrier for colourblind trait. Marriage of this woman with a colourblind man will result of the following possibilities.

Search any question & find its solution

Looking for more such questions to practice?