1. WARM UP “Don’t find fault with what you don’t understand.”
Do you agree with this? Why?
How does this apply to a study of evolution?

2. Brief History of Life

3. Simple Molecules – 4 bya
Lightning helps molecules form from basic chemicals
Miller and Urey (1953)

4. Complex Molecules – 4 bya
Molecules form chains
Sidney Fox

5. “Protocells” – 4 bya
Basic cells form
Sidney Fox

6. Bacteria – 3.6 bya
Simple, prokaryotic

7. Bacteria – 3.6 bya Radiation Kingdom Archaebacteria Kingdom Eubacteria
eukaryotes…

9. Eukaryotes – 1.5 bya Organelles Endosymbiotic Theory (Lynn Margulis)
Mitochondria and chloroplasts were once bacteria that became absorbed into other cells

10. Protist Kingdom – 1 bya
Eukaryotes
Multicellular

11. Protist Kingdom – 1 bya Radiation Plant-like (chlorophyll) Fungus-like
Animal-like
(movement)

13. Fungi Kingdom – 1 bya
From fungus-like protists

14. Aquatic Plants – 1 bya
From plant-like protists
Cell wall

16. Mosses – 435 mya
Cuticle
Water conservation

17. Ferns – 400 mya
Vascular tissue

18. Gymnosperms – 250 mya
Seeds develop
On cone scales

19. Angiosperms – 125 mya
Seeds in vessels
Ovaries and flowers

21. Primitive Animals – 1 bya
From animal-like protists
Multicellular
Sponges

22. Simple Invertebrates – 800 mya
Tissues
Jellyfish
Worms

23. Complex Invertebrates – 750 mya
Organs, hard parts
“Bugs”

24. Fish – 500 mya
Backbones

26. Amphibians – 350 mya
Lungs and limbs

27. Reptiles – 300 mya
Water conservation
Radiation
Mammals
Birds
Reptiles

29. Mammals – 250 mya
Fur
Warm-blooded

30. Birds – 100 mya
Wings
Feathers

32. WRAP UP
Describe the changes that occur from mosses to ferns to gymnosperms to angiosperms.

33. WARM UP
List as many organisms in the history of life as you can. Include the years they appeared.

34. WRAP UP
List all the organisms that appeared around 1 billion years ago.