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.
These animals descended from a common ancestor.
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