Question

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

(1 point)
Responses

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

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

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

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

Answer 1

Archaeopteryx is considered to be a transitional form between dinosaurs and birds. Which of the following is a trait that is unique to both Archaeopteryx and modern birds? (1 point)
Responses

wings
wings

feathers
feathers

claws
claws

teeth

Answer 2

These animals descended from a common ancestor.