Capturing the essence of the origin and evolution of the so-called "degeneracy debates," over whether the flora and fauna of America (including Native ...

Evolutionary biologists have grappled with the question of the emergenceand maintenance of cooperation since Darwin first listed animal cooperation asapotential problem for his theory of natural selection. Here I review four pathsthat have been delineated in the study of intra-specific cooperation amonganimals. These paths – kinship, reciprocity, byproduct mutualism andgroupselection – serve as a starting point for behavioral ecologistsinterestedstudying the initiation and maintenance of cooperation. After reviewing theempirical and theoretical underpinnings of these paths to cooperation, I touchupon some recent work (...) that has attempted to examine (or reexamine) the role ofphylogeny, punishment and morality in the light of cooperative behavior. (shrink)