1. Chapter 13 – Theory of Evolution
Evidence & Examples

2. Lamarck Hypothesis
Over the lifetime of an individual, features enlarge based on use and reduce in size based on no use
“Physical conditions of life” = the organism’s natural environment’ conditions

3. Darwin & Galápagos Islands
Observations of Finches – originally from South America and adapted after the move
This change is known as “descent with modification”

4. Natural Selection and Evolution
Natural selection plays a major role in passing on favorable traits to the future generations
These traits become adaptations needed for the population to survive

5. Inherited variation exists in every population
Darwin’s Theory
Inherited variation exists in every population
Some species are better suited to survive and reproduce
Favorable traits spread over time in a population through reproduction
Fossils provide evidence of evolution

6. Reproductive Isolation
The condition where two populations of the same species do not breed with each other because of geographic separation
They are now considered separate species

7. Punctuated Equilibrium
Tempo of Evolution
Gradualism
Species formation from gradual changes
Punctuated Equilibrium
A model of evolution with rapid changes with little or no change in between periods

8. Factors of Natural Selection
Based off Darwin’s original ideals
Emphasis on changes in the environment
Stronger traits = longer survival

9. Lung disease from bacterium
Tuberculosis (TB)
Lung disease from bacterium
Epidemic in 1993 – bacteria became resistant to antibiotics
DNA from non-resistant evolved to adapt to antibiotic environments

10. Darwin’s Finches