Which statement best describes the positive aspect of sickle-cell anemia in Africa?
A) It allowed people to work at high altitudes for many hours.
B) It gave people a natural resistance to the malaria parasite.
C) It killed off genetically weak humans who could not possible live to adulthood.
D) It kept human populations in control in a region of sparse food resources.

Question

Quizplus · Accepted Answer

Sickle-cell anemia in Africa has a positive aspect in that it gives people a natural resistance to malaria, which is a prevalent and deadly disease in the region. The presence of the sickle-cell trait can prevent the malaria parasite from invading and multiplying within red blood cells, which can increase survival rates. However, this does not negate the negative consequences of sickle-cell anemia, such as pain, risk of infection, and other complications.

Which Statement Best Describes the Positive Aspect of Sickle-Cell Anemia