SmithLifeScience                                             Name __________________ Period _____

Reading Study Guide Chapter 6 Changes Over Time
6-2 Evidence of Evolution  (pp.182-187)

Interpreting the Evidence (p.183-184)

List three pieces of evidence that support the theory of evolution.
   1. _____________________________________
   2. _____________________________________
   3. _____________________________________

4. By examining fossils, scientists can infer  the ________________ of ancient organisms.

5. Fossils show that organisms that lived in the past are very _____________ than organisms that are alive today.

Name the two characteristics that adult fish, salamander, chicken, and opossum share.
   6. ____________________________
   7. ____________________________

8. Fish, amphibians, reptiles, birds, and mammals are classified together as ____________.

9. What are homologous structures? ________________________________________
____________________________________________________________________

10. Fossils of ancient whales showed that they had _______ and __________ on land.

11. Fossil evidence supports other evidence that whales and humans share a common _______

Inferring Species Relationships (p.185-186)

12. Genes are made of _________.

13. The elephant shrew is more closely related to:      Mice and Rodents       or        Elephants

14. What is a branching tree? _____________________________________________
___________________________________________________________________

15. ______ million years ago raccoons, lesser pandas, Giant pandas, and bears had a common ancestor.

16. Lesser pandas are closely related to _________________________.

17. Giant Pandas are closely related to _________________________.

How Do New Species Form? (p.186-187)

18.A new species can form when __________________________________________
__________________________________________________________________
_________________________________________________________________

Name three ways isolation, or complete separation can occur.
Group members may be separated by a:

19. _________________     20. _________________     21. _________________

22. The Kaibab and Albert squirrel are separated by the ______________________.

23. Which squirrel has that larger range? _______________________

Assessment

A species of snake lives in a forest. A new road is built and it separates one group of snakes from another. 

24. Do you think that these two groups of snakes will become separate species? _______

25. Why? ___________________________________________________________
___________________________________________________________________

26. How were Darwin's finches isolated?