Answer to Question #178193 in Zoology for Zainab nawaz

Question

Why is the kingdom animalia monophyletic?why are the invertebrates consider paraphyletic?

Answer 1

Answer.

Kingdom animalia is monophyletic because it traces their origin and decent from a single common ancestor.

On the other hand,invertebrates are considered paraphyletic because they are made up of one cluster of Hox genes unlike vertebrates which have duplicated their original cluster more than once.