1. INTRODUCING MR. DARWIN

2. BASIC QUESTIONS IN BIOLOGY
1) ORIGIN
Where did the organisms come from?
2 DIVERSITY
How can we account for the variety?
3) ADAPTATIONS
How can we explain the specializations?
4) SCALA NATURAE
What is the basis for the ladder of life?

3. TWO HYPOTHESES DIVINE CREATION
God created organisms exactly as we see them today by a miracle.
Species do not change.
They are “fixed.”
Creation occurred in the recent past
~6,000 yrs ago

4. TWO HYPOTHESES DIVINE CREATION Prevailing paradigm for 2,000 + years
Consistent with the view that miracles occur and God intervenes in daily affairs
Its usefulness began to fail ~ 400 years ago
e.g. It didn’t explain fossils or their arrangement
e.g. The church’s influence began to diminish

5. DIVINE CREATION It was good hypothesis because it was simple.
it stimulated research into exploring God’s creations.

6. DIVINE CREATION It was NOT a good hypothesis because
It depends upon supernatural explanations- Miracles
It can not be adequately tested
Anything is possible with a god—

7. TWO HYPOTHESES
DIVINE CREATION was the accepted explanation for the 4 questions
This was the situation until the 1800’s
Jean Baptiste Lamarck (1809) (Frenchman) came along and claimed Evolution occurred.
THEN

8. 2) EVOLUTION HYPOTHESIS Organisms change in appearance over time
Species are not “fixed.”
The origin of life is not known and a God or gods may or may not have been involved but
It happened long ago—the earth is ancient.
Evolution was an old idea proposed by the Greeks.

9. 2) EVOLUTION HYPOTHESIS
No one took it seriously because
People didn’t see organisms changing
There was no mechanism for this change
Then Lamarck proposed
Evolution by Acquired Characteristics

10. 50 yrs later Charles Darwin Published
“The Origin of Species” (1859) claiming
Evolution occurred by Natural Selection
Trip on the HMS Beagle to South America
Darwin “changed from an
ordinary creationist to an
extraordinary evolutionist”

11. WHO WAS
CHARLES DARWIN?

12. Erasmus Darwin—Charles’s Grandfather

13. Robert Darwin—Charles’s father

14. Charles’s Darwin’s childhood home

15. Young Charles Darwin

16. Charles’ Darwin’s beetle collection

17. Portrait of Charles Darwin ~ 22 years old

18. University of Edinburgh

19. Christ Church College—Cambridge University

20. John Henslow

21. The Journey of the Beagle

22. H.M.S. Beagle

23. Darwin
H.M.S. Beagle—90 ft. long, 85 men

24. Captain Robert Fitzroy

26. DARWIN’S THREE CLUES
1) Populations close together are similar. Populations far apart are different.

27. DARWIN’S THREE CLUES
2) Fossil and living armadillos exist together

28. DARWIN’S THREE CLUES
3) Galapagos Islands: ~14 different islands with species that are related but different .

42. DARWIN’S THREE CLUES
3) Are these different creations or are they varieties that have been modified from an original immigrant & then specialized for each island?

43. Homeward bound
via Australia

44. The Journey of the Beagle

45. The Journey of the Beagle

46. The Journey of the Beagle

47. The Journey of the Beagle

48. On Charles Darwin’s trip around the world on the HMS Beagle he “changed from an ordinary creationist to an extraordinary evolutionist”

49. Emma Darwin

51. Charles and Emma’s Home

56. Alfred Russel Wallace

57. Thomas Huxley

58. Bishop Samuel Wilberforce