1. Evidence for Evolution (pg 4)

2. Evidence for Evolution (pg 4)
1. Fossil record: Fossils show evolutionary
changes and intermediate forms

3. 2. Comparative Anatomy: Species that are
closely related share homologous structures

4. 2. Comparative Anatomy: Species that are
closely related share homologous structures
• Example: The forelimbs of mammals all share
the same basic bone structure

5. 2. Comparative Anatomy: Species that are
closely related share homologous structures
• Example: The forelimbs of mammals all share
the same basic bone structure

6. 2. Comparative Anatomy: Species that are
closely related share homologous structures
• Example: The forelimbs of mammals all share
the same basic bone structure

7. Worksheet

8. 3. Vestigial structures = body structuresthat
have lost their primary function

9. 3. Vestigial structures = body structuresthat
have lost their primary function
Example: Hind limbs in whales and snakes

10. 3. Vestigial structures = body structuresthat
have lost their primary function
Example: Hind limbs in whales and snakes
Human Examples: Appendix, Tailbone, Goose
bumps

12. Diagram (pg 5)

13. 4. Comparative Embryology: In early stages, all
animal embryos look alike, suggesting
common ancestry

14. 4. Comparative Embryology: In early stages, all
animal embryos look alike, suggesting
common ancestry
Example: Young human embryos have gill slits
and a tail