What is the Ultimate Source of All Genetic Variability

Question

What is the ultimate source of all genetic variability?
A) Natural selection
B) Artificial selection
C) Mutation
D) Natural selection and artificial selection
E) None of these

Accepted Answer

The ultimate source of all genetic variability is mutation, which is the sudden change in the DNA sequence that can create new alleles. Natural selection and artificial selection act on this variability, but they do not create it. Therefore, options A, B, and D are incorrect. Option E is also incorrect because without genetic variability, evolutionary change would not be possible.