Biology

Question

Q5.2. AFTER malaria is cured, the frequency of the HbS allele should decrease in regions with

lots of mosquitoes because:

• People will no longer die from sickle-cell disease in these regions.

Having one copy of the HbS allele will no longer be advantageous in these regions.

Natural selection will no longer act on the HbS allele at all in these regions.

All alleles associated with genetic diseases eventually disappear.

Answer

Having one copy of the HbS allele will no longer be advantageous in these regions.

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The HbS allele is associated with sickle-cell disease, which is a genetic disorder that affects the shape of red blood cells. In regions...