Definition: A novel evolutionary trait that is unique to a particular species and all itsdescendants,which can be used as a defining character for a species or group in phylogeneticterms.衍征yǎn zhēng同源特征中出现的相对较晚者,由祖征派生而来。也译作“近裔性状”,参见“......(本文共 246 字) [阅读本文] >>