試題詳解

47. What is NOT an effect of genetic drift?
(A) Genetic drift is more significant in small populations.
(B) Genetic drift causes allele frequency to change and to fix in a population randomly.
(C) Genetic drift prefers advantageous alleles to fix in a population.
(D) Genetic drift could cause the loss of genetic variation in a population.
(E) Genetic drift may be one of the reasons that a harmful allele becoming fix in a population.