adjective🔗Share多源的，多源性的 Having multiple ancestral sources; referring to a taxon that does not contain the most recent common ancestor of its members."Calling "warm-blooded animals" a group would be polyphyletic because birds and mammals evolved warm-bloodedness independently, not from a single warm-blooded ancestor they both share. "如果把“恒温动物”称为一个类群，那将是多源的，因为鸟类和哺乳动物是各自独立进化出恒温性的，而不是从一个它们共同拥有的恒温祖先进化而来。biologyorganismscienceecologyChat with AIVocabulary GamePractice Reading
