Question 47
Chromosomes, DNA and Sex LinkageWhich of the following statements about sex-linked characters is not true?
- A.They are usually borne on the X-chromosome
- B.They are more common in males
- C.Males are usually carriers
- D.They are not usually carried on the Y chromosomes.
Show the answer and explanation
Answer: C (Males are usually carriers)
Explanation
Sex-linked genes are on the X chromosome. A male has only one X, so he cannot hide a recessive allele: he is never a carrier. Carriers are females.