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.

These animals descended from a common ancestor.
These animals descended from a common ancestor.

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

All vertebrates have seven vertebrae in their necks.

Answer 1

The most scientifically sound conclusion from the observation that humans, mice, and giraffes all have seven vertebrae in their necks is:

These animals descended from a common ancestor.

This conclusion is supported by the principles of evolutionary biology, indicating that similar traits often arise from shared ancestry.