In evolutionary biology, group selection refers to the idea that alleles can become fixed or spread in a population because of the benefits they bestow on groups, regardless of the alleles' effect on the fitness of individuals within that group.
Group selection was used as a popular explanation for adaptations, especially by V. C. Wynne-Edwards.[1][2] For several decades, however, critiques, particularly by George C. Williams,[3][4] John Maynard Smith[5] and C.M. Perrins (1964), cast serious doubt on group selection as a major mechanism of evolution, and though some scientists have pursued the idea over the last few decades, only recently have group selection models seen a minor resurgence[6][7] (albeit not as a fundamental mechanism but as a phenomenon emergent from standard selection
No comments:
Post a Comment