monophyly (monophyletic group)
- 単系統性．同一祖先に基づくこと．単系統，単系統群（日本語）
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Definition
Glossary of "Cladistics (2nd ed.)" by Kitching et al. (1998)
- (1) A group is diagnosed as monophyletic by the discover of homologies (synapomorphies). Also known as a clade.
- (2) A group that includes a most recent common ancestor plus all and only all of its descendants. See also component, paraphyly, polyphyly.