A man whose father was colour blind marries a woman who had a colour blind mother and normal father. What percentage of male children of this couple will be colour blind?

Question

A man whose father was colour blind marries a woman who had a colour blind mother and normal father. What percentage of male children of this couple will be colour blind? (A) 25% (B) 0% (C) 50% (D) 75%

Tardigrade Admin · Accepted Answer

slt is given that the man had colour blind father, i.e., man's genotype would be XY. Now, the woman had a colourblind mother and normal father, thus her genotype would be XCX. A cross between them can be represented as below. Therefore, 50% of male children of this couple will be colourblind.

Q. A man whose father was colour blind marries a woman who had a colour blind mother and normal father. What percentage of male children of this couple will be colour blind?

25%

0%

50%

75%

slt is given that the man had colour blind father, i.e., man's genotype would be XY. Now, the woman had a colourblind mother and normal father, thus her genotype would be XCX. A cross between them can be represented as below. Therefore, 50% of male children of this couple will be colourblind.