If cetaceans are determined to have diverged from the lineage leading to the artiodactyls before the divergence of lineages leading to the modern artiodactyls (including hippos),then the cetaceans can be considered
1)a sister order to the order Artiodactyla.
2)an ingroup of the order Artiodactyla.
3)the common ancestor of the order Artiodactyla.
A)1 only
B)3 only
C)1 and 2
D)1 and 3

Question

Quizplus · Accepted Answer

If cetaceans diverged before the divergence of lineages leading to modern artiodactyls, they would be a sister group to the order Artiodactyla, sharing a common ancestor with that order but not being part of it or its ancestor.

If Cetaceans Are Determined to Have Diverged from the Lineage