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ALTRUISM IN MENDELIAN POPULATIONS DERIVED FROM SIBLING GROUPS: THE HAYSTACK MODEL REVISITED
Author(s) -
Wilson David Sloan
Publication year - 1987
Publication title -
evolution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.84
H-Index - 199
eISSN - 1558-5646
pISSN - 0014-3820
DOI - 10.1111/j.1558-5646.1987.tb05876.x
Subject(s) - haystack , biology , mendelian inheritance , altruism (biology) , sibling , inheritance (genetic algorithm) , evolutionary biology , genetics , gene , developmental psychology , psychology , world wide web , computer science
A group‐selection model is presented in which each group is initiated by a single fertilized female and persists for several generations before dispersal. Maynard Smith (1964) concluded that altruism could not plausibly evolve under these circumstances. I show that his conclusion is an artifact of a simplifying assumption that amounts to a worst‐case scenario for group selection. When the standard donor‐recipient equations for altruistic behavior are used in Maynard Smith's model, Mendelian populations derived from sibling groups are often more favorable for the evolution of altruism than are the sibling groups themselves. In general, long‐term and large‐scale aspects of population structure may at times be important in the evolution of altruistic and other group‐advantageous behaviors.