单词 | apomorphy |
释义 | apomorphynoun ap·o·mor·phy ˈa-pə-ˌmȯr-fē plural apomorphies biological taxonomy : a specialized trait or character that is unique to a group or species : a character state (such as the presence of feathers) not present in an ancestral form In this case, white flowers are a derived condition, an apomorphy, and red flowers are the ancestral condition. apomorphic ¦a-pə-¦mȯr-fik adjective or less commonly apomorph ˈa-pə-ˌmȯrf As far as possible, it is assumed that each apomorphic evolutionary event only occurred once in the history of each group of related taxa … … such apomorph characters are believed to be found only among the descendants of the ancestor in which the character first occurred. |
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