Dictionary of Human Evolution and Biology

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Kin Selection Theory

Process by which genes are contributed to successive generations through collateral relatives as well as one’s own, thus contributing to total, or inclusive fitness. One of the extreme forms of group selection. Commonly used by sociobiologists to explain altruistic behaviors that could be selected for if they increase the probability of survival of close relatives.

See kinship selection, Hamilton’s rule, interdemic selection, and second Darwinian revolution.

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