1. WARM UP
“Don’t let what you cannot do interfere with what you can do.” –John Wooden
What does this mean to you?
How can you apply this to natural selection or evolution?

2. Types of Selection

3. Microevolution
The fact that small-scale changes in trait frequencies occur in a population
Individuals don’t evolve, populations do
Traits become more or less common

4. Directional Selection
Shift in one direction
To bigger, darker, faster, etc.

5. Directional Selection
Peppered moth

6. Directional Selection
Pesticide resistance

7. Directional Selection
Antibiotic resistance

10. Stabilizing Selection
Middle/average traits are favored

11. Stabilizing Selection
Cactus spines

12. Stabilizing Selection
Infant head size

13. Disruptive Selection
Extremes at both ends are favored

14. Disruptive Selection
Darwin’s Finches

15. Disruptive Selection
The key that makes speciation and macroevolution possible

16. Disruptive Selection

17. Review

18. WRAP UP
Compare and contrast natural selection with artificial selection.

19. WARM UP
Describe the 3 types of natural selection, and give an example of each.

20. WRAP UP
Do you agree that disruptive selection over a long period of time could be the lead-in to speciation and/or macroevolution?
Why or why not?