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词汇 paraphyletic
释义

Definition of paraphyletic in English:

paraphyletic

adjective ˌparəfʌɪˈlɛtɪkˌperəfīˈledik
Biology
  • (of a group of organisms) descended from a common evolutionary ancestor or ancestral group, but not including all the descendant groups.

    〔生〕(生物群)并系的同祖线系的,同祖种族的

    Example sentencesExamples
    • To represent this, we have used multiple lines drawn to paraphyletic groups in the cladogram above.
    • It now seems likely that the first two of these groups are paraphyletic; that is, they contain some but not all descendants of a common ancestor.
    • These taxa together form a paraphyletic group at the base of the clade of biramous arthropods.
    • However, each tribe individually is either paraphyletic or polyphyletic with respect to most recent songbird classifications.
    • In fact, it is possible that the group is paraphyletic; the last common ancestor of all polymerid trilobites may also have been ancestral to the agnostids as well.

Definition of paraphyletic in US English:

paraphyletic

adjectiveˌperəfīˈledik
Biology
  • (of a group of organisms) descended from a common evolutionary ancestor or ancestral group, but not including all the descendant groups.

    〔生〕(生物群)并系的同祖线系的,同祖种族的

    Example sentencesExamples
    • To represent this, we have used multiple lines drawn to paraphyletic groups in the cladogram above.
    • It now seems likely that the first two of these groups are paraphyletic; that is, they contain some but not all descendants of a common ancestor.
    • These taxa together form a paraphyletic group at the base of the clade of biramous arthropods.
    • In fact, it is possible that the group is paraphyletic; the last common ancestor of all polymerid trilobites may also have been ancestral to the agnostids as well.
    • However, each tribe individually is either paraphyletic or polyphyletic with respect to most recent songbird classifications.
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