lecture18 - BioNB 221: Lecture 18 Oct. 8, 2008 Lecture 18:...

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BioNB 221: Lecture 18 Oct. 8, 2008 Page 1 Lecture 18: Kin selection and & Altruism Professor H. Kern Reeve A. Altruism : Unselfish regard for or devotion to the welfare of others. Specifically, an altruistic behavior is one that benefits (increases the fitness of) another individual (the recipient) at some cost (fitness loss) to the altruist (the actor). Thus, altruism is an interesting evolutionary paradox. Two possible "solutions" are Kin Selection and Reciprocity . B. Tests of the Kin Selection Hypothesis Prediction I: Individuals should help relatives more than non-kin Belding's ground squirrels (modified fr: Sherman 1977, Science 197: 1246) (modified fr. Emlen & Wrege (1988), Behav. Ecol. Sociobiol. 23: 305).
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BioNB 221: Lecture 18 Oct. 8, 2008 Page 2 Prediction II: Individuals should help close relatives more than distant relatives. Prediction III: Many organisms should have evolved mechanisms to identify kin. A.
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This note was uploaded on 08/28/2008 for the course BIO 2210 taught by Professor Seeley during the Fall '08 term at Cornell University (Engineering School).

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lecture18 - BioNB 221: Lecture 18 Oct. 8, 2008 Lecture 18:...

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