WAEC Biology 2022 Question 47

Question 47

Chromosomes, DNA and Sex Linkage

Which of the following statements about sex-linked traits is not correct?

  1. A.Males inherit sex-linked traits from their fathers
  2. B.Sex-linked traits are more common in males
  3. C.Females can be carriers because they can be heterozygous for the trait
  4. D.Males are never carriers since they only receive one sex chromosome
Show the answer and explanation

Answer: A (Males inherit sex-linked traits from their fathers)

Explanation

A son receives the Y chromosome from his father and his X from his mother, so X-linked traits pass to sons from their mothers.