Varieties of population structure and the levels of selection

Abstract
Group-structured populations, of the kind prominent in discussions of multilevel selection, are contrasted with ‘neighbor-structured’ populations. I argue that it is a necessary condition on multilevel description of a selection process that there should be a nonarbitrary division of the population into equivalence classes (or an approximation to this situation). The discussion is focused via comparisons between two famous problem cases involving group structure (altruism and heterozygote advantage) and two neighbor-structured cases that resemble them. Conclusions are also drawn about the role of correlated interaction in the evolution of altruism. 1 Introduction 2 Two Kinds of Population Structure 3 Objections and Replies 4 Particles on a Line 5 Conclusion Appendix: Neighborhoods and Selection CiteULike    Connotea    Del.icio.us    What's this?
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    P. Godfrey-Smith & B. Kerr (2013). Gestalt-Switching and the Evolutionary Transitions. British Journal for the Philosophy of Science 64 (1):205-222.
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