Multiple choice general knowledge science & technology

In the context of genetic disorders, consider the following : A woman suffers from colour blindness while her husband does not suffer from it. They have a son and a daughter. In this context, which one of the following statements is most probabl) correct ?

  1. Both children suffer from colour blindness.

  2. Daughter suffers from colour blindness while son does not suffer from it.

  3. Both children do not suffer from colour blindness.

  4. Son suffers from colour blrndness while daughter does not suffer from it.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Color blindness is X-linked recessive. A color-blind woman (XcXc) passes one Xc to son (making him XcY - affected) and one Xc to daughter (making her XcX, where X is normal father's X). Daughter is a carrier but not affected, while son is affected. This is because males have only one X chromosome.

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