2023年2月17日 · Now reading about paraphyly, it shows this: In this phylogenetic tree [second image], the green group is paraphyletic; it is composed of a common ancestor (the lowest green vertical stem) and some of its descendants, but it excludes the blue group (a monophyletic group) which diverged from the green group.

2016年12月14日 · $\begingroup$ For your example; I don't think it is obvious that H. erectus is paraphyletic. The question is if H. erectus is the direct ancestor of modern man (if so H. erectus would be paraphyletic), or if H. erectus and H. sapiens share a common ancestor (which would make them related, but none of them would have to be paraphyletic).

A taxon (Plur. taxa) is any (monophyletic or not) group of species. For example the group of yellow flowers is a taxon.

2018年12月13日 · D) Monophyly, Paraphyly, Polyphyly. As you said, those terms make no sense here! E) None of the above. If there is any intuitive answer to the question what has happened between two nodes is time has passed.

I think LuketheDuke's answer is an oversimplification of the biological species concept (possibly resulting from the dictionary having a poor definition).

2019年10月27日 · To make things clearer, you need to understand the concept of paraphyly. The bony fishes group is paraphyletic with respect to the tetrapoda . In other words, it consists of the group's last common ancestor and all descendants of that ancestor excluding the tetrapoda .

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I'm working on an assignment for my IB biology class and some assistance would be highly appreciated. I've read several articles and I still haven't quite gotten the answer I'm looking for.

2018年1月9日 · In my textbook, I read that two organisms of the same species share specific or fundamental characters. Piper nigrum (Black pepper) and solanum nigrum (Black nightshade) share the same specific epi...

2021年12月7日 · Yes, humans will remain members of apes and primates. The terms "ape" and "primate" are common names representing certain phylogenetic clades.