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Old 12-12-2019, 04:57 PM
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Colibri is offline
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Originally Posted by Chronos View Post
Nitpick: Eukaryotes are not descended from bacteria. Eukaryotes and bacteria are both descended from archae. And in fact, there are some modern archae that are more closely related to us than either are to any bacteria.
Actually, Eucaryotes and Archaea are both descended from a common ancestor that was descended from Bacteria (or a bacteria-like organism). The fact that they are more closely related to one another than to Bacteria indicates that Bacteria is the basal group.

Now it's arguable whether the common ancestor to Bacteria on one hand, and Archaea/Eucaryota on the other, should be called a Bacterium. But if it is, then all living things would fall within a monophyletic Bacteria.