Ch 5: Evolution and Biodiversity

A) Timeline of Geologic History

B) Darwin's 5

1) Populations overproduce offspring

2) Variation exists with the population

3) There is a struggle for existence

4) Organisms most suited to the environment survive

5) Survivors reproduce

C) Mechanisms of Evolution

1) Natural Selection

a) directional selection

b) stabilizing selection

c) disruptive selection

2) Isolation

a) geographical

b) reproductive

3) Mutation

4) Migration

5) Genetic drift