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4.Principles of Inheritance and Variation
medium
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
A
$25$ percent
B
$50$ percent
C
$75$ percent
D
$100$ percent
Solution

(b)A normal woman whose father was colourblind is actually a carrier woman. So
Standard 12
Biology