1. Darwin’s Theory of Evolution was based on:
The great diversity of living things he saw on his travels
The remains of ancient organisms called fossils
The characteristics of organisms on the Galapagos Islands

2. Galapagos vs South American Organisms
Birds & other organisms on Galapagos had similar traits to those in South America
These organisms had important differences as well…
Iguanas on Galapagos had large claws which helped them grip slippery rocks
Iguanas in South American had small claws to climb trees

3. Darwin observed the Galapagos finches while traveling on the H. M
Darwin observed the Galapagos finches while traveling on the H.M.S Beagle.
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4. Darwin hypothesized that one finch landed on the Island.
This one finch over time had evolved into many different types of finches.
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6. This could particularly be seen in the different types of bird beaks:
Some finches have small beaks to eats small seeds,
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7. Some finches have small beaks to eats small seeds, other finches have large beaks to crush hard large seeds.
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8. Some finches have small beaks to eats small seeds, other finches have large beaks to crush hard large seeds. Other beaks were designed to catch insects.
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15. Beak shape is an example of an adaptation.
Adaptation – a trait that helps an organism survive and reproduce
The finches’ beak helped them to get food
Change is a slow process over many generations. Large
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16. Which Finch is better adapted to crush large seeds that fall to the ground?
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17. Which Finch is better adapted to crush large seeds that fall to the ground?
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18. Just look at the Variation in Finches

19. Variation in Finches

20. Variation in Finches

21. Variation in Finches

22. Variation in Finches

23. Variation in Finches

24. Variation in Finches

25. Variation in Finches

26. Variation in Finches

30. They even evolved into a Vampire Finch.
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31. Many species were able to thrive if they made the journey to the Galapagos because once they arrived there were very few mammalian predators.
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32. Change is a slow process over many generations
Helpful variations may gradually accumulate in a species, while unfavorable variations disappear.
Blue-footed Booby

33. Frigatebird

35. Darwin’s theories. -
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36. Organisms have changed over time.
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37. Part I
Organisms have changed over time becoming better adapted to new conditions, and the ones living today are different from those that lived in the past.
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38. Part I
Organisms have changed over time becoming better adapted to new conditions, and the ones living today are different from those that lived in the past.
Furthermore, many organisms that once lived are now extinct. The world is not constant, but changing.
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39. Part I
Organisms have changed over time becoming better adapted to new conditions, and the ones living today are different from those that lived in the past.
Furthermore, many organisms that once lived are now extinct. The world is not constant, but changing. The fossil record provides ample evidence for this view.
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40. Organisms share a common ancestor.
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41. Who is this scientist? Organisms share a common ancestor.
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42. Who is this scientist? Jane Goodall
Organisms share a common ancestor.
Who is this scientist?
Jane Goodall
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43. Common ancestor

44. What happened here?
Common ancestor

45. That species went extinct
Common ancestor

46. Don’t look at humans as just coming from apes.
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47. Don’t look at humans as just coming from apes.
We are one stem on a giant tree of primates that share a common ancestor.
Common ancestor
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48. Don’t look at humans as just coming from apes.
We are one stem on a giant tree of primates that share a common ancestor.
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49. Change is gradual and slow, taking place over a long time.
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50. Change is gradual and slow, taking place over a long time.
This was supported by the fossil record, and was consistent with the fact that no naturalist had observed the sudden appearance of a new species.
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51. Change is a slow process over many generations.
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52. Change is a slow process over many generations.
Large extinction events are common.
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59. Video - Evolution of Everything, 13
Video - Evolution of Everything, 13.7 billion years ago to modern humans in 7 min. Enjoy!
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60. Video! The Evolution of... http://www.youtube.com/watch?v=faRlFsYmkeY
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