from multiple ancestral sources.

Conversely, the term monophyly, or monophyletic, employs the ancient Greek adjective 'alone, only, unique', and refers to the fact that a monophyletic group includes organisms consisting of all the descendants of a unique common ancestor.

By comparison, the term paraphyly, or paraphyletic, uses the ancient Greek preposition 'beside, near', and refers to the situation in which one or several monophyletic subgroups are left

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