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InHerbert Gintis examined cultural evolution statistically, offering evidence that societies that promote pro-social norms have higher survival rates than societies naughty black mamaz upskirt do not.

Gintis wrote that genetic and cultural evolution can work together. Genes transfer information in DNA, and cultures transfer information encoded in brains, artifacts, or documents.

Language, tools, lethal weapons, fire, cooking, etc. For example, cooking led to a reduction of size of the human gut, since less digestion is needed for cooked food. blackpfnis

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Language led to a change in the human larynx and naked smallest blackpenis increase in brain size. Projectile weapons led to changes in human hands and shoulders, such that humans are much better at throwing objects than the closest naked smallest blackpenis relative, the chimpanzee. The use of the Price equation to black gahan bbw naked porn pic group selection was challenged naked smallest blackpenis van Veelen inarguing that it is based on invalid mathematical assumptions.

Richard Dawkins and other advocates of the gene-centered view of evolution remain unconvinced about group selection. The psychologist Steven Pinker concluded that "group selection has no useful role to play in psychology or social science", as it "is not a precise implementation of the theory of natural selection, as it is, say, in genetic algorithms or artificial life simulations.

Instead it is a loose metaphor, more like the struggle among kinds of tires or telephones.

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naked smallest blackpenis The evolutionary biologist Jerry Coyne summarized the arguments in The New York Times in non-technical terms as follows: Smllest selection isn't widely accepted by evolutionists for several reasons.

First, it's not an efficient way to select for traits, like altruistic behavior, that are supposed to be detrimental to the individual but good for the group. Groups divide to form other groups much less often than organisms reproduce to form other organisms, so group selection for altruism naked smallest blackpenis be unlikely to override the tendency of each group to quickly lose its black pussy vidz xxx pages through natural selection favoring cheaters.

Further, little evidence naked smallest blackpenis that selection on groups has promoted the evolution of any trait. Finally, other, more plausible evolutionary forces, like direct selection on individuals for reciprocal support, could have made humans prosocial. These reasons explain why only a few biologists, blackpneis [David Sloan] Wilson and E. Wilson no relationadvocate group selection as the evolutionary source of cooperation.

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From Wikipedia, the free encyclopedia. Unit of selectioninclusive naked smallest blackpenisand inclusive fitness in humans. Dual inheritance theory and cultural group selection. Engineer In The Garden. Uses authors parameter link CS1 maint: Explicit use of et al. Retrieved June 19, The Descent of Man.

The Social Conquest of Earth. University of Chicago Naked smallest blackpenis. The Big black pussy open pics Gene 1st ed.

Animal Dispersion in Relation to Social Behaviour. What do they tell us about group selection in nature".

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Journal of Theoretical Biology. Culture, Genes, and the Welfare of Others. Retrieved 12 January Contextual analysis meets direct fitness".

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Behavioral and Brain Sciences. Archived from the original on Exploring group-level evolutionary adaptations using naked smallest blackpenis selection theory". Theory, Research, and Practice.

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