Principle of Inheritance and VariationMedium
Question
A woman eith normal vision, but whose father was colourblind, marries a colourblind man. Suppose that the fourth child of this couple was a boy. This boy
Options
A.must have normal colour vision
B.will be partially colourblind sinc he is heterozygous fpr the colourblind mutant allele
C.must be colourblind
D.may be colourblind or may be of normal vision
Solution
Colour blindness is a sex linked (X-linked) teait. It always transfers from mother to som. A woman, whose father was colour blind, will be carrier with a colourblind man will result of the given possibilities.
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