synapomorphy

synapomorphy
[sɪˈnapə(ʊ)ˌmɔːfi]
(pl. -ies)
  1. [mass noun](Biology)the possession by two organisms of a characteristic (not necessarily the same in each) that is derived from one characteristic in an organism from which they both evolved
    (生)共同衍征,近裔共生,共有新征
    ■[count noun]a characteristic derived in this way
    共同衍征
语源
  1. 1960s: from syn- 'together' + apo- 'away from' + Greek morphē 'form'
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