Navigate to http://www.ucmp.berkeley.edu/education/explorations/tours/Trex/index.html Follow the directions for the introduction and then proceed through each Folder, answering questions as you go along. You are responsible for the content presented in this activity. 1. Identify and briefly describe the three domains 2. What is meant by the term "common ancestor?" 3. In terms of DNA, explain why Max doesn't look exactly like his great-­‐grandpa James? 4. In a tree drawn to show common ancestry, where are the oldest ancestors located? 5. What are the two big ideas so far? 6. Circle the point at which organisms B and C have a common ancestor. Is this a common ancestor of A as well? What about of D? A
B
C
D
7. What is the diagram in question 6 called? 8. What information do these diagrams tell us? 9. Humans, hares, caimans, parrots all share what characteristic? 10. Is T. rex more closely related to humans and hares or to caimans and parrots? 11. Is T. rex’s heel bone more similar to caimans or parrots? 12. Was T. rex bipedal or quadrapedal? 13. How many fingers did T. rex have on its hand? 14. What did T. rex taste like? 15. Complete the “Special Assignment” and record your answers to the questions here. If you finish the assignment early…. Check out http://evolution.berkeley.edu/evosite/evo101/IIntro.shtml it’s a great review tool, you’ve got a test on Chapters 14 and 15 next class. Check out http://www.latimes.com/news/science/la-­‐sci-­‐evolution11dec11,0,5882337.story an article on how humans have been evolving quickly over the last few thousand years