Day 215 (11pter-11p15.4): the sickle cell mutation


Day 215, the beginning of Chromosome 11, has 215 protein-coding genes (browser view), including the gene HBB (hemoglobin subunit beta).

A mutation in HBB causes sickle cell anemia but also protects against malaria, explaining its persistence in sub-Saharan Africa.

Click here to see all 8442913 letters of Day 215 with rs334, the HbS mutation, flashing.

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