A) anaemia
B) haemophilia
C) pemecious anaemia
D) sickle cell anaemia
Correct Answer: D
Solution :
A disease in many Africans, which reduces oxygen up take by blood and is genetic disease called sickle cell anaemia. The erythrocytes in sickle cell anaemia are sickled shaped instead of being biconcave discs. The blood Rows in the capillaries may be partially or completely blocked by the cells causing severe pain and damage to tissues.
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