1. Concept 2: Descent with Modification
You must know:
How Lamarck’s view of the mechanism of evolution differed from Darwin’s
Several examples of evidence for evolution
The differences between structures that are homologous and those that are analogous, and how this relates to evolution
The role of adaptations, variation, time, reproductive success, and heritability in evolution

2. Evidence for Evolution
Direct observations
Evolution of antibiotic-resistant bacteria

3. Evidence for Evolution
Direct observations
Evolution of antibiotic-resistant bacteria
The fossil record
Past organisms were different, changes have occurred

5. Evidence for Evolution
Direct observations
Evolution of antibiotic-resistant bacteria
The fossil record
Past organisms were different, changes have occurred
Homology and Convergent Evolution
Homologous Structures: variations on a structural theme: wing, flipper, hand; vistigial

6. Homologous Structures

7. Evidence for Evolution
Direct observations
Evolution of antibiotic-resistant bacteria
The fossil record
Past organisms were different, changes have occurred
Homology and Convergent Evolution
Homologous Structures: variations on a structural theme: wing, flipper, hand; vestigial
Analogous Structures: similar adaptations to similar environments: fin, flipper; streamlined body

8. Analogous Structure through Convergent Evolution

9. Evidence for Evolution
Direct observations
Evolution of antibiotic-resistant bacteria
The fossil record
Past organisms were different, changes have occurred
Homology and Convergent Evolution
Homologous Structures: Variations on a structural theme: wing, flipper, hand
Analogous Structures: similar adaptations to similar environments: fin, flipper; streamlined body
Biogeography
Geographic distribution of species: continental drift from Pangaea

11.
Next class: Checkpoint: Concept 1 and 2