1. WARM UP
List the major eras in geologic/life history, and the years they encompass.
Describe why major changes in organisms occur at the end of one era of geologic time and the beginning of another.

2. Evidence for Macroevolution

3. The Earth
Extremely old
4.6 billion years

4. The Earth
Extremely old
Radiometric dating

5. The Earth
Processes occur in the same way now that they did before

6. The Earth
Uniformitarianism (James Hutton and Charles Lyell)

7. Evidence 1: Fossils
Hard parts or imprints

8. Evidence 1: Fossils
Age based on rock age or layer

9. Evidence 1: Fossils
Show transitional forms

10. Evidence 1: Fossils
Show transitional forms

11. Evidence 1: Fossils
Show transitional forms

12. Evidence 1: Fossils
Show transitional forms

13. Evidence 1: Fossils
Show transitional forms

14. Evidence 1: Fossils
Record is incomplete due to destruction of rock

15. Evidence 2: Comparative Anatomy
Morphological divergence
Ancestral structure leads to many variations

16. Evidence 2: Comparative Anatomy
Vestigial structures
Ancestral “leftovers”

17. Evidence 2: Comparative Anatomy
Vestigial structures
Ancestral “leftovers”

18. Evidence 2: Comparative Anatomy
Vestigial structures
Ancestral “leftovers”

19. Evidence 2: Comparative Anatomy
Need to show homology
Similarity due to ancestry

20. Evidence 2: Comparative Anatomy
Be careful of analogy
Similarity due to environment

21. Evidence 3: Comparative Embryology
Look at development
Flower bud growth rate

22. Evidence 3: Comparative Embryology
Vertebrate embryos similar

23. Evidence 4: Comparative Biochemistry
Similarity of amino acids in common proteins and the DNA code

24. WRAP UP
List 3 ways fossils help us understand evolution.

25. WARM UP List the 4 pieces of evidence that support evolution.
Give a specific example of each type of evidence.

26. WRAP UP
Describe the piece of evidence that you think most strongly supports evolution, and explain why that is your choice.