1. Darwin’s Theory of Evolution
Chapter 15
Darwin’s Theory of Evolution
Student notes

2. 15-1 Homework
Define each vocabulary word in at least 1 complete sentence.
Write out all key concepts.

3. 15-1 The Puzzle of Life’s Diversity
Objective:
Describe the pattern Darwin observed among organisms of the Galapagos Islands

4. Who was Charles Darwin?
What time did he live in and where did he live?
What was his great contribution to science?

5. 15–1 The Puzzle of Life’s Diversity
A. Voyage of the Beagle

6. Figure 15–1 Darwin’s Voyage

7. B. Darwin’s Observations
1. Patterns of Diversity

8. 2. Living Organisms and Fossils

9. 3. The Galapagos Islands

10. Giant Tortoises of the Galápagos Islands
Section 15-1
Pinta
Tower
Pinta Island Intermediate shell
Marchena
James
Fernandina
Santa Cruz
Isabela
Santa Fe
Hood Island
Saddle-backed shell
Floreana
Hood
Isabela Island
Dome-shaped shell

11. C. The Journey Home
collection of fossils and species found on mainland and the islands
observations of the characteristics similarities and differences
Was there a common ancestor?
What did his travels reveal to him?
What were the differences of species from the mainland verse those found on the island?

12. 15–1 Homework
Answer all question in section assessment on page 372 in at least 3 complete sentences.

13. 15–2 Ideas That Shaped Darwin’s Thinking
Objective:
How did Hutton and Lyell describe geological change
Identify how Lamark thought species evolved
Describe Malthus’s theory of population growth

14. 15–2 Ideas That Shaped Darwin’s Thinking
At Darwin’s time most believed:
*How old is the earth?
*What is the evidence for both theories?

15. 15-2 Homework
Write out all key concepts.
Define each vocabulary words in at least 1 complete sentence.

16. A. An Ancient, Changing Earth
Hutton and Lyell helped scientists

17. 1. Hutton’s Theory of Geological Change
1795 geologist, theory that geological forces that have shaped earth

18. 2. Darwin received a copy of geologist Charles Lyell’s book

19. Movement of Earth’s Crust
Section 15-2
Sea level
Sea level
Sedimentary rocks form in horizontal layers.
When part of Earth’s crust is compressed, a bend in a rock forms, tilting the rock layers.
As the surface erodes due to water, wind, waves, or glaciers, the older rock surface is exposed.
New sediment is then deposited above the exposed older rock surface.

20. B. Jean-Baptiste Lamarck preceded Darwin

21. 1. Tendency Toward Perfection

22. 2. Use and Disuse

23. 3. Inheritance of Acquired Traits

24. 4. Evaluating Lamarck’s Theory

25. When Is a Flipper a Wing?
All living things are related. Some relationships are easy to see— your pet cat may not roar like a lion, but it clearly resembles one.
Other relationships are less obvious.

26. 15–3 Darwin Presents His Case
Objective:
List the events leading to Darwin’s publication of On the Origin of Species
Describe how natural variation is used in artificial selection
Explain how natural selection is related to species’ fitness
State Darwin’s theory of evolution by natural selection.

27. 15–3 Homework:
Write out all key concepts.
Define each vocabulary words in at least one complete sentence.

28. 15–3 Darwin Presents His Case
Publication of On the Origin of Species
Natural Variation and Artificial Selection
C. Evolution by Natural Selection

29. 1. The Struggle for Existence

30. 2. Survival of the Fittest

31. 3. Descent With Modification

32. D. Evidence of Evolution
1. The Fossil Record
2. Geographic Distribution of Living Species
3. Homologous Body Structures
4. Similarities in Early Development

33. 1. The Fossil Record

34. 2. Geographic Distribution of Living Species

35. 3. Homologous Body Structures

36. Figure 15–15 Homologous Body Structures
Section 15-3
Turtle
Alligator
Bird
Mammals
Typical primitive fish

37. 4. Similarities in Early Development

38. E. Summary of Darwin’s Theory

39. Concept Map Section 15-3 Evidence of Evolution includes
The fossil record
Geographic distribution of living species
Homologous body structures
Similarities in early development
which is composed of
which indicates
which implies
which implies
Physical remains of organisms
Common ancestral species
Similar genes

40. Section 15-3 Homework:
Answer all assessment question on page 386 in at least 3 complete sentences.

41. Chapter 15 Summary Questions
Homework:
Answer all assessment question on page 389 #1-10 in at least 3 complete sentences.