Name Date Class Evolution and Classification On a separate sheet of paper, describe the role structure plays in determining evolutionary relationships between organisms. 29C Name Date Class Evolution and Classification Understanding Main Ideas Answer the following questions in the spaces provided. 1. How has the theory of evolution changed how biologists classify organisms? 2. Describe how a branching tree diagram is organized. 3. On a branching tree diagram, which characteristics probably developed the earliest? 4. What are two methods scientists use to determine the evolutionary history of a species? Building Vocabulary On a separate sheet of paper, write a definition for each of these terms. 5. shared derived characteristic 6. convergent evolution 7. branching tree diagram 29D