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NEET 2016
Exam
NEET
Year
2016
Subject
Zoology
Chapter
Principles of Inheritance and Variation

NEET 2016 · Zoology · Principles of Inheritance and Variation

If a colour-blind man marries a woman who is homozygous for normal...

If a colour-blind man marries a woman who is homozygous for normal colour vision, the probability of their son being colour-blind isIf a colour-blind man marries a woman who is homozygous for normal colour vision, the probability of their son being

Options

  1. A0%
  2. B50%
  3. C75%
  4. D100%

Correct answer

A. 0%

Step-by-step solution

Colour blindness is an X-linked recessive disease and shows criss-cross inheritance. If a colour-blind man marries a woman who is homozygous for normal colour vision, the probability of their son being colour-blind is 0%.

If a colour-blind man marries a woman who is homozygous for normal colour vision, the probability of their son being

100% - carrier daughters (Phenotypically normal)

100% - Normal son
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