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NEET 2006
Exam
NEET
Year
2006
Subject
Zoology
Chapter
Principles of Inheritance and Variation

NEET 2006 · Zoology · Principles of Inheritance and Variation

If a colourblind woman marries a normal visioned man, their sons...

If a colourblind woman marries a normal visioned man, their sons will be:If a colourblind woman marries a normal visioned man, their sons will be:

Options

  1. Aall colourblind
  2. Ball normal visioned
  3. Cone-half colourblind and one-half normal
  4. Dthree-fourth colourblind and one-fourth normal

Correct answer

A. all colourblind

Step-by-step solution

Colour blindness is a hereditary disease in which the gene for this disease is located on the X-chromosome. So, if a colour-blind woman marries a normal man, then it will produce all colour blind (XCY)\left(\mathrm{X}^{\mathrm{C}} \mathrm{Y}\right) sons. In the case of a carrier woman, the probability of a colour-blind son and a normal son is 50:50. If a colourblind woman marries a normal visioned man, their sons will be:
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