1. Chapter 16 section 1 Darwin's Voyage of Discovery

2. Key Questions What was Charles Darwin's contribution to science?
What three patterns of biodiversity did Darwin note?

3. Darwin British, 1809-1882 Studied medicine at Univ. of Edinburgh
Studied theology at Cambridge
1831, HMS Beagle

4. Darwin's Journey Patterns of biodiversity 1. Species vary globally
Flightless birds
2. Species vary locally
Finches/tortoises
3. Species vary over time
Fossils
Patterns

5. Chapter 16 sec 2 Ideas That Shaped Darwin's Thinking

6. Key Questions
What did Hutton and Lyell conclude about Earth's history?
How did Lamarck proposed that species evolve?
What was Malthus's view of population growth?
How is inherited variation used in artificial selection?

7. Influences: Hutton and Lyell
Law of Uniformitarianism
Outcome: Earth Changes, do living things?

8. Influences: Lamarck Before—Species unchanging divine creation
French Scientist ( )
How organisms changed over time
Theory of Use and Disuse
Birds webbed feet
Giraffe
WRONG!!!
Outcome: Organisms change somehow

9. Influences: Malthus 1798 Uncontrolled population growth
Outcome: Few individuals survive......how?

10. Influences: Artificial Selection
Breeders
More pronounced traits
Banana—seeds
Outcome: Some variations are better

11. Chapter 16 Sec 3 Darwin Presents His Case

12. Key Questions Under what conditions does natural selection occur?
What does Darwin's mechanism for evolution suggest about living and extinct species?

13. Darwin Alfred Russell Wallace
On the Origin of Species by Means of Natural Selection

14. Conditions for Natural Selection:
Struggle for existence
Variation and Adaptation
Survival of the Fittest
It's all about....
....reproduction!
p. 462

15. Natural Selection: Peppered Moth

16. Natural Selection: Peppered Moths
Favorable traits passed on
The black peppered -- dark forest
The white peppered moths -- light forest
Adaptation
Adapt  natural selection

17. Common Descent Well adapted = survive, reproduce
Descent with Modification
Evidence: fossil record
Evolutionary trees