What is the original source of variation that natural selection can act upon?
A) Mutation
B) Gene flow
C) Genetic drift
D) All of the above

Question

Quizplus · Accepted Answer

Natural selection acts upon the variation that arises from mutations, which are changes in the DNA sequence. Gene flow and genetic drift can also influence variation, but they do not generate new genetic variation on their own.

What Is the Original Source of Variation That Natural Selection