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How are large numbers of genes for sickle cell anaemia maintained in some human populations?

April 26, 2017anaemia CELL genes Human large maintained Numbers populations Sickle

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How are large numbers of genes for sickle cell anaemia maintained in some human populations?

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, and when they mate there is at least a 50% probability that the offspring will also be heterozygous. This way the sickle cell anemia allele persists in human populations.