The Hb^S allele has been maintained in certain populations in Africa,India,and the Mediterranean because heterozygous individuals with this allele are less susceptible to malaria.

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The Hb^S allele, also known as sickle cell trait, has been found to provide some resistance to malaria. Therefore, heterozygous individuals with this allele (meaning they have one normal hemoglobin gene and one sickle cell hemoglobin gene) are less susceptible to malaria, making it an advantageous trait in areas where malaria is prevalent. This is why it has been maintained in certain populations in Africa, India, and the Mediterranean.

The HbS Allele Has Been Maintained in Certain Populations in Africa,India,and

The Hb^S Allele Has Been Maintained in Certain Populations in Africa,India,and