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Principles of Evolution, Ecology and Behavior - Lecture 36

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Lecture 36 - Selfishness and Altruism

Originally, altruism and self-sacrifice were thought to be incompatible with natural selection, even by Darwin. Now we have several explanations for how altruism can increase an individual's fitness. One is kin selection, or the idea that helping relatives can help increase one's genes in the population. Another involves ecological constraints and punishments. Here, individuals contribute to the group and wait their turn to reproduce.

Prof. Stephen C. Stearns
EEB 122: Principles of Evolution, Ecology and Behavior, Spring 2009
(Yale University: Open Yale)
http://oyc.yale.edu
Date accessed: 2009-11-18
License: Creative Commons BY-NC-SA

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