Definition: A group of organisms believed to have evolved from a common ancestor,according to the principles of cladistics.分支fēn zhī源于單一共同祖先的一群物種,由一個祖先種與所有它的后裔種組成,與“單系群”同義。Origin:“group of organisms evolved from a com......(本文共 516 字) [閱讀本文] >>
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