A Multilevel Exploration

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Science  08 Jun 2007:
Vol. 316, Issue 5830, pp. 1428-1430
DOI: 10.1126/science.1140806

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Evolution and the Levels of Selection. By Samir Okasha. Clarendon Press, Oxford, 2006. 275 pp. $55, £30. ISBN 9780199267972.

Considering conceptual and foundational aspects of the debates over levels of selection--natural selection acting on genes, individuals, groups, or species--Okasha pays particular attention to effects that filter from one level up or down to others.