| 单词 | runaway selection |
| 释义 | > as lemmasrunaway selection runaway selection n. Biology sexual selection for traits which do not contribute to survival or which are detrimental to it, but which nevertheless increase the reproductive success of animals possessing them, so that there is positive feedback for their maintenance and augmentation over the generations; more fully runaway sexual selection.Sexual ornamentation such as the elaborate tail of the male peacock is cited as a typical example of this. ΚΠ 1930 R. A. Fisher Let. 16 July in Genetical Theory Nat. Selection (1999) App. ii. 306 I must have another shot about the runaway sexual selection, but I will not take long because I think you will see it better in three words than in three hundred.] 1975 Science 14 Nov. 633/1 We consider the extraordinary male dimorphism..that can arise when a runaway sexual selection among the members of the transformed or older sex..permits a small difference in size or age to confer a disproportionate difference in fertility. 1994 M. B. Andersson Sexual Select. xvii. 423 In plants, runaway selection by genetic coupling seems less likely for floral display, as the conspicuous flower and the attracted pollinator belong to different species. 2008 Ottawa Citizen 12 Feb. a5 Some evolution experts..argue it's not true ‘runaway selection’ in the biological sense, or it would lead to more offspring, not fewer. < as lemmas |
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