As natural selection acts on a trait in a population, how will the amount of variation associated with that trait in the population change?
A) Variation will decrease.
B) Variation will increase.
C) Variation will remain the same.
D) Variation will disappear altogether.

Question

Quizplus · Accepted Answer

Natural selection acts on traits that increase an organism's chance of survival and reproduction, which results in individuals with advantageous traits passing on their genes to future generations. This decreases the amount of variation in the population because the advantageous trait becomes more common and the less advantageous traits are selected against. Over time, this can lead to the fixation of a particular trait in the population, reducing the overall amount of variation.

As Natural Selection Acts on a Trait in a Population