1. Nothing in biology makes sense except in the light of evolution. Theodosius Dobzhanksy

2. What is a theory? zA theory is a broad, overarching explanation to explain a natural phenomenon yLittle doubt that it is true yGenerally incorporates a pattern and a process

3. Evolution - theory that zAll organisms are related to each other by common ancestry (pattern) zAll organisms have changed over time primarily in response to natural selection (process)

4. Landmarks in Evolutionary Biology

5. Aristotle 340 B.C. Invents scientific natural history while pursuing marine biology on the island of Lesbos

6. Carolus Linnaeus 1730-1770 Founds field of taxonomy

7. Georges-Louis Leclerc, Comte de Buffon 1730- 1770 Catalogues all known life in his Historie naturelle

8. Georges Cuvier 1795 Founds comparative anatomy; classifies the invertebrates in more detail than Aristotle did

9. Jean Baptiste de Lamarck zArgues that a process of organismal evolution can cause differences observed between species but gets mechanism wrong (inheritance of acquired characteristics) zProduces an evolutionary tree of the animals as good as those produced a century later