Question 40
Chromosomes, DNA and Sex LinkageHaemophilia results from the mutation of the genes
- A.in the sex chromosomes
- B.which control skin colour
- C.which control the mechanism for blood-clotting
- D.which control the formation of haemoglobin
Show the answer and explanation
Answer: C (which control the mechanism for blood-clotting)
Explanation
Haemophilia is a failure of blood clotting caused by a faulty gene for a clotting factor.