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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%
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Correct Answer: Option B
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

There is an explanation video available below.


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Explanation Video

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