Malaria and Sickle Cell Anemia

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4759   5 years ago
samer176 | 8 subscribers
4759   5 years ago
Sickle cell anemia causes pain, fatigue and delayed growth, all because of a lack of enough healthy red blood cells. And yet genetic mutations that cause it — recessive genes for the oxygen-carrying hemoglobin protein — have survived natural selection because they also seem to provide a natural defense against malaria.
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