Humans, mice, and giraffes have seven vertebrae in their necks. What can scientists conclude from this observation?

Question

(1 point)
Responses

Humans, mice, and giraffes have the same number of bones.
Humans, mice, and giraffes have the same number of bones.

Each animal independently evolved this trait.
Each animal independently evolved this trait.

All vertebrates have seven vertebrae in their necks.
All vertebrates have seven vertebrae in their necks.

These animals descended from a common ancestor.

Answer 1

These animals descended from a common ancestor.