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Cooperation is needed for evolution to construct new levelsof organization. Genomes, cells, multicellular organisms, socialinsects, and human society are all based on cooperation. Cooperationmeans that selfish replicators forgo some of their reproductivepotential to help one another. But natural selection impliescompetition and therefore opposes cooperation unless a specificmechanism is at work. Here I discuss five mechanisms for theevolution of cooperation: kin selection, direct reciprocity,indirect reciprocity, network reciprocity, and group selection.For each mechanism, a simple rule is derived that specifieswhether natural selection can lead to cooperation.
Program for Evolutionary Dynamics, Department of Organismic and Evolutionary Biology, and Department of Mathematics, Harvard University, Cambridge, MA 02138, USA.
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PERSPECTIVES
Robert Boyd (8 December 2006) Science314 (5805), 1555.
[DOI: 10.1126/science.1136841] |Summary »|Full Text »|PDF »
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