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Which of the following explains why the allele for sickle-cell disease remains at a relatively high level in the population?

A) It is the dominant allele.

B) It confers protection from malaria to carriers.

C) It is not harmful enough to be selected against.

D) It keeps returning to the population through mutation.

Respuesta :

Answer: It confers protection from malaria to carriers.

Explanation:just took test

Alleles are the variant form of genes, which are present on the same loci of chromosomes as genes and codes for different phenotypic characters.

Why does the allele for sickle-cell allele remain at a high level in a population?

  • The allele for sickle cell anemia is high in a population because its single copy provides resistance to the malaria. The human migration caused these genes to be found in the worldwide population.

  • The allele is common in African people and they are resistant to malaria. This gave them a high chance of reproduction and survival keeping the allele in the gene pool.

Thus, the correct answer is Option B.

Learn more about alleles here:

https://brainly.com/question/25970081

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