出典:Wikipedia
出典:『Wikipedia』 (2011/06/08 15:01 UTC 版)
Atavism is the tendency to revert to ancestral type. In biology, an atavism is an evolutionary throwback, such as traits reappearing which had disappeared generations before. Atavisms occur because genes for previously existing phenotypical features are often preserved in DNA, even though the genes are not expressed in some or most of the organisms possessing them.
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atavism
atavism
等時性.
the characteristic of a person
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