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Definitions from the Web

Paraphyletic

Definition:

Paraphyletic refers to a taxonomic group that includes some, but not all, descendants of a common ancestor. In such groups, one or more subgroups are excluded, which leads to an incomplete representation of evolutionary relationships.

Part of Speech:

Adjective

Senses and Usages:

1. In taxonomic classification, paraphyletic groups are formed when a common ancestor is grouped together with some, but not all, of its descendants. Example: Birds are considered paraphyletic since the group does not include all descendants of their common ancestor.
2. However, in informal conversations, paraphyletic can also refer to something that is incomplete or represents only a part of a larger concept. Example: The introductory course provided only a paraphyletic understanding of the subject matter.

Sample Sentences:

• The dinosaur family is a paraphyletic group, excluding birds which are their descendants.
• Many biologists argue against the recognition of paraphyletic groups, preferring monophyletic classifications.
• By excluding certain subgroups, the paraphyletic classification system can sometimes oversimplify complex evolutionary relationships.

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