出典:Wiktionary
出典:『Wiktionary』 (2016/02/26 05:46 UTC 版)
From a hypothetical example used in Richard Dawkins' book The Selfish Gene (1976), whereby a person with a green beard acts altruistically towards other people with green beards.
出典:Wikipedia
出典:『Wikipedia』 (2011/05/04 17:45 UTC 版)
The gene-centered view of evolution postulates that natural selection will increase the frequency of those genes whose phenotypic effects ensure their successful replication. A gene for altruism can be favored by selection if the altruism is primarily directed at other individuals who share the same gene (kin selection).