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

Question

(1 point)

All vertebrates have seven vertebrae in their necks.

These animals descended from a common ancestor.

Each animal independently evolved this trait.

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

Answer 1

The correct conclusion is that these animals descended from a common ancestor. This is because they share the same number of vertebrae in their necks, indicating a common evolutionary history.