Individuals with one sickle cell allele and one normal hemoglobin allele are not affected by the malaria parasite because of ____.
A) neutral mutations
B) heterozygote advantage
C) frequency-dependent selection
D) disruptive selection
E) stabilizing selection

Question

Quizplus · Accepted Answer

Heterozygote advantage explains why individuals with one sickle cell allele and one normal hemoglobin allele have a resistance to malaria. This genetic makeup provides a survival advantage in regions where malaria is prevalent, as these individuals are less likely to suffer from the severe effects of either sickle cell disease or malaria.

Individuals with One Sickle Cell Allele and One Normal Hemoglobin