Question

The lower frequency of sickle-cell anemia among present-day Americans of West African ancestry as compared to people living in West Africa blacks is attributed to:

a) genetic drift
b) gene flow
c) new mutations
d) gene pool

Answer 1

The lower frequency of sickle-cell anemia among present-day Americans of West African ancestry as compared to people living in West Africa is attributed to genetic drift.

Step-by-step explanation:

The lower frequency of sickle-cell anemia among present-day Americans of West African ancestry as compared to people living in West Africa is attributed to genetic drift. Genetic drift refers to the random change in allele frequencies in a population over time. In this case, the movement of individuals from West Africa to the Americas during the slave trade resulted in a smaller population size and increased genetic drift, leading to a decrease in the frequency of the sickle-cell allele.