...other common changes include a decrease in brain weight, a shortened head, weakened bones, degeneration of muscles, and a decrease in body hair. Some consider hominization to be a form of self-domestication, as some of these morphological and ecological and behavioral changes have been observed in human evolution. At the population level, coat-color polymorphism is widely observed across livestock species, and abnormal functions and forms can become characteristics of livestock breeds. *Some explanations of terms that refer to "self-domestication" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…また脳重量の減少,短頭化,骨組織の脆弱(ぜいじやく)化,筋の退化あるいは体毛の減少などがしばしば見られる。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。… ※「self-domestication」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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