Question 45
Mendelian InheritanceWhich of the following statements about sickle cell anaemia is correct?
- A.It is caused by sex-linked genes
- B.It is more common in males than in females
- C.Two sickle cell carrier parents may have a sickling child
- D.It is caused by recessive genes
Show the answer and explanation
Answer: C (Two sickle cell carrier parents may have a sickling child)
Explanation
Two AS parents have a 1 in 4 chance of an SS (sickler) child; the gene is autosomal, so it is not sex-linked.