HESI A2 Exam Preparation

HESI A2 Practice Test & Study Guide

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HESI A2

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Evolution & Natural Selection HESI A2 Practice Questions

Free Evolution & Natural Selection practice questions for the HESI A2 exam with detailed rationales.

Question 2 of 2

What is the primary mechanism by which evolution occurs?
Mutation
Natural selection
Gene flow
Genetic drift

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