Carriers of the sickle-cell allele (i.e. those with a heterozygous genotype) are fittest in environments with high frequencies o

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GarryVolchara [31]

4 years ago

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Carriers of the sickle-cell allele (i.e. those with a heterozygous genotype) are fittest in environments with high frequencies o

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Biology

1 answer:

Ostrovityanka [42] · Answer 1 · 2022-01-23T20:58:41+03:00

Individuals who are heterozygous for the sickle-cell allele suffer less from the attack of malaria because a small percentage of the red blood cells are sickle-shaped. They are more resistant to malaria than individuals who have two copies of the normal haemoglobin allele. Heterozygous individuals have a better chance of surviving and reproducing in regions where malaria is prevalent since they do not fully contract the disease.