1. Chapter 3.4 (pages 88-89)

2. Key concepts: Identify three kinds of adaptations that help organisms survive. Describe the four parts of natural selection. Explain how variation occurs within a population Explain why genetic variation within a population is important. Explain how resistance to compounds is a survival characteristic.

3. Key Vocabulary: Adaptation Natural selection Resistance Camouflage

4. Quick Write: What do you already know about adaptations?

5. Adaptations: Adaptation is a characteristic that improves an individual's ability to survive and reproduce in a particular environment. What was natural selection? How did it work? Sound clip on ice age beast: When have you learned about adaptations? Sexual reproduction advantages vs. asexual reproduction Adaptations help organisms survive!

6. What ever works the best…

7. Natural selection:

8. Genetic variation The more different types of individuals in an area can lead to genetic variation. However if many of the population dies off, only the organisms left will be able to reproduce GENETIC BOTTLENECKING The change in the inherited characteristics of a population over time that BENEFITS the organism…

9. Genetic variation GENETIC BOTTLENECKING The change in the inherited characteristics of a population over time that BENEFITS the organism…

10. Human Influence: Insect resistance: – Insecticides kill insects – Some grow a resistance to this due to their genes having the ability to make a protein to resist it – Survivors reproduce Anti-biotic Resistant bacteria Habitat Destruction Genetic evolution: – NPR NPR The change in the inherited characteristics of a population over time that BENEFITS the organism…