Sickle cell anaemia is due to

Options

A. Deficiency of vitamin B
B. Deficiency of iron in the blood
C. A genetically determined defect of haemoglobin synthesis
D. Increase in the number of leukocytes in the blood

Answer

C

Explanation

Sickle cell anaemia is a disease in which our body produces abnormally shaped red blood cells. This is due to defective hemoglobin gene i.e. `Hb^5 Hb^5` (autosomal recessive disorder).