Definition of "polyphyly" []

• The condition of being polyphyletic (noun)

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• "Does the writer think taxa should be monophyletic, or is polyphyly ok?"
• "A growing number of scientist are now questioning the very root of Darwin's tree and the veracity of LUCA, moving more towards polyphyly as a better theory to describe history and DNA results."
• "Most recently, Ericson et al. (2006), in a study of molecular sequence data, also supported gruiform polyphyly."