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Sickle cell anaemia has not been eliminated from the African population because
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- it is not a fatal disease
- it provides immunity against malaria
- it is controlled by dominant genes
- it is controlled by recessive genes
Correct Option: B
In sickle cell anaemia RBCs become sickle shaped which are not supportive for the growth of malarial parasite Plasmodium so it provides immunity against malaria disease.
