Which of the following statements about natural selection is true?
A) It increases genetic variation because adaptations are produced.
B) It decreases genetic variation because the least adapted individuals are less likely to pass on their variation to the next generation.
C) It decreases genetic variation if selection is directional but increases genetic variation if selection is stabilizing.
D) It decreases genetic variation if selection is stabilizing but increases genetic variation if selection is directional.

Question

Quizplus · Accepted Answer

Natural selection decreases genetic variation because individuals with traits that are less suited to their environment are less likely to survive and reproduce, which means that their genes are less likely to be passed on to the next generation. Over time, this can lead to a decrease in the diversity of traits within a population.

Which of the Following Statements About Natural Selection Is True