When a colour blind woman marries a normal man, what is the probability of their...
BIOLOGY
JAMB 2022
When a colour blind woman marries a normal man, what is the probability of their son being colour blind?
- A. 25%
- B. 100%
- C. 50%
- D. 0%
Correct Answer: B. 100%
Explanation
If a woman is colorblind, that means she has the nonworking gene on both X chromosomes. Since sons almost always get their only X chromosome from their mom, chances are they will be colorblind too
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