A woman with normal vision, but whose father was colour blind, marries a colour blind man. Suppose that the fourth child of this couple was a boy. This boy:
Held on 30 Apr 2005 · Verified 9 Jul 2026.
may be colourblind or may be of normal vision
must be colour blind
must have normal colour vision
will be partially colour blind since he is heterozygous for the colourblind mutant allele.
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Work through every NEET UG Principles of Inheritance and Variation PYQ, year by year.
