Question

1. Throughout the semester, we have learned about phylogenetic groups within phyla that were once believed to be monophyletic but which we now know are either paraphyletic or polyphyletic. Give two examples of such groups - one paraphyletic and one that ended up being polyphyletic and separated into new phyla. For each original grouping - why were these organisms originally grouped together

          1. Throughout the semester, we have learned about phylogenetic groups within phyla that
were once believed to be monophyletic but which we now know are either paraphyletic
or polyphyletic. Give two examples of such groups - one paraphyletic and one that
ended up being polyphyletic and separated into new phyla. For each original grouping -
why were these organisms originally grouped together

1. Throughout the semester, we have learned about phylogenetic groups within phyla that
were once believed to be monophyletic but which we now know are either paraphyletic
or polyphyletic. Give two examples of such groups - one paraphyletic and one that
ended up being polyphyletic and separated into new phyla. For each original grouping -
why were these organisms originally grouped together

Added by Jill F.

Biology for AP Courses

Julianne Zedalis, John Eggebrecht

Instant Answer

Solved by Expert Dr. Anas Syed

Step 1

- Paraphyletic: A paraphyletic group includes a common ancestor and some, but not all, of its descendants. In other words, it is a group that excludes certain descendants of a common ancestor. - Polyphyletic: A polyphyletic group includes organisms that do not Show more…

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Throughout the semester, we have learned about phylogenetic groups within phyla that were once believed to be monophyletic but which we now know are either paraphyletic or polyphyletic. Give two examples of such groups - one paraphyletic and one that ended up being polyphyletic and separated into new phyla. For each original grouping - why were these organisms originally grouped together?