How Does Random Genetic Drift Affect Large Populations

Question

How does random genetic drift affect large populations?
A) It may be the primary evolutionary force.
B) It has a moderate effect.
C) It has very little effect.
D) It is not currently known what kind of effect it has on large populations.
E) It does not affect large populations at all.

Accepted Answer

Random genetic drift has very little effect on large populations because there is a much smaller chance of a random event drastically affecting the entire population. The larger the population, the more likely it is that natural selection will be the primary evolutionary force.