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.
Answers: 2
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Which of the following explains why the allele for sickle-cell disease remains at a relatively high...
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