What is the only source of all new alleles?
A) Mutation
B) Gene flow
C) Genetic drift
D) Natural selection
E) Genetic polymorphism

Question

Quizplus · Accepted Answer

Mutation is the only source of all new alleles because it involves changes in the DNA sequence, which can introduce new genetic variations into a population. Other options like gene flow, genetic drift, and natural selection are mechanisms of evolution that act on existing genetic variation, but they do not create new alleles. Genetic polymorphism refers to the existence of two or more variants (alleles) at a particular gene locus in a population's genetic makeup, but it is not a source of new alleles itself.

What Is the Only Source of All New Alleles