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Author Question: Three living species X, Y, and Z share a common ancestor T, as do extinct specie (Read 1703 times)

geoffrey

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on: Jul 14, 2013
Three living species X, Y, and Z share a common ancestor T, as do extinct species U and V. A grouping that consists of species T, X, Y, and Z (but not U or V) makes up
A) a valid taxon.
B) a monophyletic clade.
C) an ingroup, with species U as the outgroup.
D) a paraphyletic group.
E) a polyphyletic group.


penguins

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Reply #1 on: Jul 15, 2013
Easy! It's D. Bye for now :D


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geoffrey

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Reply #2 on: Aug 1, 2013
Thank you!


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