Evolution and the Levels of Selection

Does natural selection act primarily on individual organisms, on groups, on genes, or on whole species? The question of levels of selection - on which biologists and philosophers have long disagreed - is central to evolutionary theory and to the philosophy of biology. Samir Okasha's comprehensive analysis gives a clear account of the philosophical issues at stake in the current debate.

Samir Okasha is Professor of Philosophy at Bristol University. Before that he taught at the University of York for 3 years, and was a Jacobsen Research Fellow at the London School of Economics for 2 years. He was a Postdoctoral Research Fellow at the National Univeristy of Mexico for 1 year and received his doctorate in 1998 from the University of Oxford.