Chapter 20.5, Problem 3R

Summary Introduction

To review:

The presence of variations at the genetic level in a population, which may elevate the chances that certain members of the population might survive unpredictable environment change, but there is no guarantee that this would be the case.

Introduction:

Genetic variation is defined as the variation or changes in deoxyribonucleic acid (DNA) sequence caused due to mutations, gene flow or other reasons. A single mutation has a tendency to have large effects in an organism, but in most of the cases, the evolutionary changes are a result of the accumulation of many mutations.