Principle-Of-Inheritance-And-Variation Question 656

Question: A sex linked recessive gene C produces red green colour blindness in humans. A normal woman whose father was colourblind marries a colourblind man. Of all the girls born to these parents what percentage is expected to be colourblind [JIPMER 2002]

Options:

A) 25 percent

B) 50 percent

C) 75 percent

D) 100 percent

Show Answer

Answer:

Correct Answer: B

Solution:

A normal woman whose father was colourblind is actually a carrier woman.

So