Correct option: B
Explanation: Autosomal recessive disorder present on X chromosome is known as color blindness. So, a man whose father was color blind who is normal (XY ) marries a female whose mother is color blind but father was normal, so we say that the woman is the carrier XXC.
When a carries a female marries a normal male then their son will be 50%color blind.
Parents…. Husband × Wife
Genes…. XY × XCX
Gametes…..X Y × XC, X
X | Y | |
XC | XCX | XCY |
X | XX | XY |