Campbell Biology (10th Edition)

Published by Pearson
ISBN 10: 0321775651
ISBN 13: 978-0-32177-565-8

Chapter 15 - Test Your Understanding - Level 3 - Synthesis/Evaluation: 13

Answer

In asexual reproduction, organisms want to clone themselves in a stable environment for which their genotype/phenotype is well adapted. They use only mitosis. When the environment is unstable, the genetic recombination which comes from crossing over and from assorting chromosomes into gametes is of benefit in generating genetic diversity on which natural selection can act to pick better adapted genotypes/phenotypes.

Work Step by Step

Review the chapter with an eye to details about mitosis and meiosis, and review the last several chapters to see more details about these. Combine this with the insights of this chapter about the role of linkage in genetics and the role of chromosomes in heredity.
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