Question

A protein extracted from a dinosaur bone is similar to the protein found in birds. How does this discovery provide genetic evidence that dinosaurs and birds are closely related?

A. It suggests they ate similar foods.
B. It suggests they had similar DNA sequences.
C. It suggests both existed during the same time in history.
D. It suggests both had bones made of protein.

Answer 1

Answer:B

Ancient protein dating back 80 million years to the Cretaceous geologic period has been preserved in bone fragments and soft tissues of a hadrosaur, or duck-billed dinosaur. The new findings support earlier results suggesting that collagen protein survived in the bones of a well preserved Tyrannosaurus rex, and offer robust new evidence supporting previous conclusions that birds and dinosaurs are evolutionarily related.

Answer 2

It suggests they had similar DNA sequences.

Step-by-step explanation: