A clade includes which of the following?
A) an outgroup and an ingroup
B) a common ancestor and all its descendant species
C) one taxa with shared derived characters
D) both an ancestor and all its descendant species, and taxa with shared derived characters
E) the ingroup only

Question

Quizplus · Accepted Answer

A clade is defined as a group of organisms that includes a common ancestor and all of its descendant species. This definition emphasizes the evolutionary relationships amongst the members of the clade. In contrast, options A, C, D, and E each miss critical elements of this definition.

A Clade Includes Which of the Following