The study of sickle-cell anemia and its relation to malarial environments demonstrates that
A) homozygotes lack the capacity to digest lactose.
B) changes in cultural adaptation can result in changes in the selective pressures on a human population.
C) selection removes recessive alleles from the gene pool faster than it does dominant alleles.
D) heterozygotes are not as selectively fit as are dominant homozygotes.
E) natural selection improves a gene pool by wiping out deleterious alleles.

Question

Quizplus · Accepted Answer

The study of sickle-cell anemia shows how changes in environmental factors, such as exposure to malaria, can cause changes in the frequency of alleles within a population, demonstrating that changes in cultural adaptation can result in changes in the selective pressures on a human population. This is known as the theory of gene-culture coevolution. The other answer choices are not relevant to the topic of sickle-cell anemia and its relation to malaria.

The Study of Sickle-Cell Anemia and Its Relation to Malarial