When gene flow occurs,its effect is opposite that of genetic drift,because gene flow __________.
A) tends to decrease the genetic differences between populations
B) creates more homogeneous populations than genetic drift
C) is driven by unusually high mutation rates
D) causes replication of undesirable traits instead of desirable ones

Question

Quizplus · Accepted Answer

Gene flow introduces new genetic variation into populations and tends to reduce genetic differences between populations by bringing in new alleles from outside. It tends to create more heterogeneous populations than genetic drift. It is not driven by mutation rates, and its effect on desirable or undesirable traits depends on the context in which it occurs.

When Gene Flow Occurs,its Effect Is Opposite That of Genetic