JAMB Biology 1991 Question 40

Question 40

Chromosomes, DNA and Sex Linkage

Which of the following characters is NOT sex-linked?

  1. A.River blindness
  2. B.Baldness
  3. C.Haemophilia
  4. D.Colour blindness
Show the answer and explanation

Answer: A (River blindness)

Explanation

River blindness is an infection caused by a worm spread by blackflies, not an inherited trait.