Question

a clade is like one branch on a tree. which of these represents a clade?

Explanation:

A clade is a group of organisms that includes an ancestor and all of its descendants. In a phylogenetic tree, a clade is represented by a monophyletic group. Option A only includes part of the descendants without the common ancestor. Option B includes two separate groups without a single common ancestor. Option C also does not represent a monophyletic group. Option D includes a common ancestor and all of its descendants, which is the definition of a clade.

Answer:

D