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Sickle Cell Anemia:

Sickle cell anemia is a genetic disorder affecting hemoglobin.

Autosomal recessive inheritance: HbA/HbA (normal), HbS/HbS (affected), HbA/HbS (carrier).

Mutation in the HBB gene leads to abnormal hemoglobin (HbS).

Heterozygous advantage in malaria-endemic regions.

Genetic variation within populations.

Selective advantage and historical context.

Prevalence varies by region and exposure to malaria.



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