…Since some of these morphological changes and the accompanying ecological and behavioral changes can also be seen in the process of human evolution, some consider hominization to be the self-domestication of humans. At the population level, coat color polymorphism is widely observed across livestock species, and abnormal functions and forms can become characteristics of livestock breeds. This is thought to be the result of domestication reducing the pressure of natural selection and strengthening the pressure of artificial selection. … *Some of the terminology that refers to "coat-color polymorphism" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…このような形態的変化およびそれにともなう生態的・行動的変化のいくつかが,人類進化の過程にも見られるところから,ヒト化hominizationをヒトの自己家畜化self‐domesticationであるとみなす立場もある。集団レベルの変化としては,毛色多型coat‐color polymorphismが各家畜種を通じ広く認められ,あるいは奇形的機能や形態が家畜品種の特徴となることもある。これは家畜化により自然淘汰圧が低下し,人為淘汰圧が強化されたことの結果と考えられる。… ※「coat-color polymorphism」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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