| 单词 | group selection |
| 释义 | > as lemmasgroup selection group selection n. Biology a form of natural selection in which characteristics that may be disadvantageous to an individual can persist or increase in the population if they contribute to the survival and reproduction of the group as a whole.Natural selection is now generally thought not to act at the group level, and instances of apparent group selection are explained by other selective processes which affect gene distribution in populations, esp. kin selection. ΚΠ 1894 Fortnightly 56 15 His [sc. Darwin's] remarks apply with greater force to physical or extra-group selection than to intra-group selection.] 1895 B. Bosanquet Aspects Social Probl. 46 xvi. 294 How then does group selection affect the relations of the members of the community [of insects] to each other? 1919 Sci. Monthly Jan. 25 In common with many militaristic writers [Karl] Pearson attributes an important rôle to group selection whether it takes the form of actual war, of competition for markets, trade routes and spheres of influence. 1962 Evolution 16 530/2 So far as we can see, no genetic model for such group selection is here presented. 2002 S. Pinker Blank Slate (Book Club ed.) xiv. 258 Thinkers with collectivist sympathies have tried to eke out a place for unmeasured generosity by invoking group selection. < as lemmas |
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