Campbell Biology (11th Edition)

Published by Pearson
ISBN 10: 0-13409-341-0
ISBN 13: 978-0-13409-341-3

Chapter 38 - Test Your Understanding - Level 3 - Synthesis/Evaluation - Page 839: 9


As a small population (founder or remnant) a self-incompatible species might fare poorly since it might by chance contain only individuals genetically identical for the self-incompatibility alleles, leading to very low levels of reproduction. However, if unlike individuals did remain in the small population, higher genetic diversity, important for adapting to changed conditions, would likely be found than if the small population were from a self-fertile species. The self-fertile species would, however, have a much easier time reproducing even from a very small number of individuals.

Work Step by Step

The key to this answer is to see the balance between ease of reproduction (self-fertile) and maintained genetic diversity (important for evolutionary survival) for these two scenarios.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.