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11/10/2021 9:02 pm
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Sickle cell anaemia has not been eliminated from the African population because
(1) it is controlled by dominant genes
(2) it is not a fatal disease
(3) it is controlled by recessive genes
(4) it provides immunity against malaria
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11/10/2021 9:03 pm
Correct answer: (4) it provides immunity against malaria