1. WHAT IS EVOLUTION?

2. WHAT IS YOUR OPINION?
How would you explain the evolution of this trait?
Cave salamanders are blind (their eyes are non-functional). How could a biologist explain how this inability evolved from sighted ancestors?

3. PRE-DARWIN IDEAS
Earth is young
Earth is not changing

4. HISTORY: In the beginning…
Plato and Aristotle (mid 300 B.C.)
Scale of Nature

5. EVIDENCE FROM GEOLOGY James Hutton
He proposed the theory of uniformitarianism
Charles Lyell
1830 wrote Principles of Geology that Darwin read on his journey supporting Hutton’s work

6. JUDEO CHRISTIAN CULTURE
Exploring God’s work
Carlos Linnaeus (1700s):
___________________________
George Cuvier (late 1700s):
- Paleontology: Found that fossils were dissimilar to modern life
- Species can become _________________
- Species can ___________________________

7. Erasmus Darwin
Grandpa!
Termed _______________
Life developed from a single sources
Humans close to primates (how dare he!)

8. O.K. ORGANISMS EVOLVE BUT WHAT MAKES THEM EVOLVE?
MECHANISMS BEHIND EVOLUTION
Jean Baptiste Pierre Antoine de Monet, Chevealier de Lamarck…a.k.a. Lamarck!
Published in 1809 when baby Darwin was born 
______________________________________________________________________________
Idea #1: _______________________________
Idea #2: _______________________________
Idea #3:________________________________

9. LAMARCK’S IDEA

10. Charles Darwin (1809-1882) Beagle voyage around the world
Looked at living organisms and fossil record

11. VOYAGE ON THE BEAGLE

12. PATTERNS IN DIVERSITY 1. Rheas in South America Emu in Australia
Ostrich in Africa

13. Darwin questioned why are marsupials only found in Australia even though Europe had a similar environment.

14. Unique South American Character
A South American tropical lizard more similar to a S.A. desert lizard than another lizard elsewhere

15. 2. Species Vary Locally
What does the difference in structure between the two tortoises tell you about the island they occupy?
Galapagos Tortoises

16. 3. Species vary over time
Ancestor of armadillo was much bigger

17. Darwin also observed the geological process Hutton and Lyell observed on his journey

18. Working towards a theory of Natural Selection
Malthus’ work: population size can increases exponentially but it remains stable over time…why?

19. Darwin - Descent with Modification
Today known as “evolution”

20. 3 Points To Darwin’s Theory of Natural Selection (Mechanism)1.

21. 2. _________________________________

22. 3. _________________________
The environment plays a role in keeping populations in check
Natural selection __
_____________________
____________________
“Survival of The Fittest”: those that can survive and reproduce the most viable offspring are the most fit

23. Alfred Wallace ( )
I have this theory about natural selection charlsey boy, what do you think?
Darwin’s Origin of Species
Decent with modification (evolution)
Natural Selection
Decent of Man was also then published

24. Lamarck vs. Darwin