1. Kinds of adaptations

2. Adaptation
Any trait that helps an organism survive and reproduce successfully in a specific environment

3. Structural Adaptations
External body parts or coloring that aids in survival
Ex. Camouflage, tearing teeth, venom

4. Coloring
Camouflage
Warning coloration
Mimicry
Attract a mate

6. Warning Coloration

7. v v

9. Body Structure
Location of eyes
Kinds of teeth
Venom
Armor
wings

10. Physiological Adaptations
How the body parts perform their specific jobs to aid in survival
Examples:
Warm blooded vs. Cold blooded
Cows have stomachs with 4 divisions
sharks can sense electricity.

11. Behavioral Adaptations
An action that aids survival
Examples
Migration to water sources during dry season
herding for safety in numbers
hibernation to save energy during winter

12. Traits can change over time in a population
Tale of the peppered Moth

13. There are two traits in the population (Step 1.Genetic Variation)

14. White ones survived better (Step 2.Helpful traits increase survival)

15. Then pollution made the trees darker, so the black ones survived better

16. Result: The predators ate more white moths
Black moths survive and pass on their genes
Step 3.Helpful traits get passed on to the next generation more often than less helpful traits
So the next generation had more black individuals than white individuals

17. Once we started fixing pollution, the trees got lighter again

18. Result: So now the white moths survived better
The white trait was passed on more frequently
The new population has more white moths than black.

19. This is how traits change over time
Step 4.The percentage of individuals with that helpful trait increases, changing the population.

20. Natural selection: When the environment causes a trait to become more common in the population because it conveys an advantage.
1 . Genetic Variation
2. One trait conveys an advantage
3. Individuals with that trait survive and reproduce more often
4. That trait becomes more common in the population

21. Artificial Selection: When humans cause a particular trait to become more common in a population because of selective breeding
1. Genetic variation- desired trait present
2. Human only breeds individuals that have that trait
3. The trait become more common in the population.