| 单词 | artificial selection |
| 释义 | > as lemmasartificial selection artificial selection n. Biology the development or maintenance of distinct variants of a species by human intervention, such that each successive generation is produced by the deliberate breeding, or the preferential reproduction, of individuals which have particular desired characteristics; contrasted with natural selection. ΚΠ 1859 C. Darwin Origin of Species iv. 109 If feeble man can do much by his powers of artificial selection, I can see no limit to the amount of change..which may be effected in the long course of time by nature's power of selection. 1931 E. C. Semple Geogr. Mediterranean Region xii. 331 Italy, like Greece, secured the largest financial returns from its relatively limited pastures by improving its stock through artificial selection. 2004 J. C. Avise Hope, Hype & Reality Genetic Engin. 10 Artificial selection acts only on the available stores of genetic variation in closely related creatures that can interbreed, whereas modern genetic engineering can in principle swap genes freely among any living creatures. < as lemmas |
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