Loose Leaf For Integrated Principles Of Zoology
18th Edition
ISBN: 9781260411140
Author: Cleveland P Hickman Jr. Emeritus, Susan L. Keen, David J Eisenhour Professor PhD, Allan Larson, Helen I'Anson Associate Professor of Biology
Publisher: McGraw-Hill Education
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Chapter 36, Problem 12RQ
Summary Introduction
To determine: The differences between kin selection and altruism. The ways by which kin selection is in accord with the notion of inclusive fitness.
Introduction: If everything else is considered to be equal, then brothers who share half of their alleles are more likely to aid one another rather than a cousin with whom they share only one-fourth of the alleles. The hypothesis proposed on the basis of this genetic explanation for altruism and cooperation is called kin selection.
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Using the concept of inclusive fitness (and kin selection), explain how altruistic behavior (e.g. where an
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How does group selection theory explain the altruistic behavior of animals and why is this explanation problematic for advocates of inclusive fitness theory?
Intrasexual selection involves competition among one sex (typically males) for mating access to the other sex. Intersexual selection involves mate choice in which individuals from one sex (typically females) choose their mates from among individuals of the other sex. Imagine a group of males that is engaged in agonistic behavior, from which Male A emerges triumphant. Now imagine a female that is assessing all of the males that were involved in the fights, and chooses Male A. Explain why this situation shows how intrasexual and intersexual selection pressures are likely both at play in the trait selection.
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Loose Leaf For Integrated Principles Of Zoology
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