Biology and Philosophy 18 (3):445-461 (2003)

Samir Okasha
University of Bristol
This paper investigates the role of the concept of group heritability in group selection theory, in relation to the well-known distinction between type 1 and type 2 group selection (GS1 and GS2). I argue that group heritability is required for the operation of GS1 but not GS2, despite what a number of authors have claimed. I offer a numerical example of the evolution of altruism in a multi-group population which demonstrates that a group heritability coefficient of zero is perfectly compatible with the successful operation of group selection in the GS2 sense. A diagnosis of why group heritability has wrongly been regarded as necessary for GS2 is suggested.
Keywords Altruism  Group selection  Heritability  Levels of selection
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DOI 10.1023/A:1024140123391
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References found in this work BETA

Explanatory Pluralism in Evolutionary Biology.Kim Sterelny - 1996 - Biology and Philosophy 11 (2):193-214.
Unto Others.David Sloan Wilson & Elliott Sober - 2002 - Philosophy and Phenomenological Research 65 (3):681-684.

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Units and Levels of Selection.Elisabeth Lloyd - 2008 - Stanford Encyclopedia of Philosophy.

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