Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 20.4, Problem 3R
Summary Introduction
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The examples of extreme
Introduction:
The directional selection is the type of natural selection in which an extreme phenotypic character or trait is promoted due to the changes in the environment. This causes the changes in the allele frequency and the shifting of the phenotype in a fixed direction.
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