1. Jigsaw activity: How does mutation lead to Adaptation?
What is Natural Selection?
Give an example of Natural Selection.
What is the Theory of Evolution?
What evidences support Evolution?

2. Jig saw Activity: Adaptation, Natural Selection, and Evolution
Questions
Notes
How does mutation lead to Adaptation?
Give an example of Natural Selection.
What is Natural Selection?
What is the Theory of Evolution?
What evidences support Evolution?

3. 5. What evidences support Evolution?
Jigsaw activity:
On a piece of A3 paper, write a paragraph summary that answers your assigned question. Be ready to present your answers to your peers.
How does mutation lead to Adaptation?
3. Give an example of Natural Selection.
5. What evidences support Evolution?
4. What is the Theory of Evolution?
2. What is Natural Selection?

4. 1
GENETIC VARIATION
leads to
Adaptation

5. Fig. 22.11. Some spectacular adaptations.

6. Adaptation
Adaptation is a long evolutionary process where a population becomes better suited to its habitat.
Feature which is especially important for an organism's
survival.
Horse’s teeth
Such adaptations are produced by the better suited forms reproducing more successfully, which is natural selection.

7. Adaptation is driven by Natural Selection2
Adaptation is driven by Natural Selection

9. There are 2 variations of the beetles, green and red.
The birds prefer eating the green beetles.
Over generations the red beetles increase in population because they are not eaten by the birds.
More survive to produce more offspring.
Generations later….
Over time the red beetles have been selected over the green beetles

10. An Example of Natural Selection3
An Example of Natural Selection

11. How did giraffe’s develop their long necks?
Giraffe you tube video

12. Incorrect model of evolution
Change through use and disuse

13. Natural Selection’s Explanation
Ancestors had different neck lengths
Through natural selection, longer necks survived and passed on their genes.
Eventually all giraffes had long necks.

15. 4
Theory of Evolution

16. Evolution
Evolution is the change in the inherited traits (passed on from parents to offspring) of a population over many generations. These traits could be physical, chemical or behavioral.
This change is caused by mutations in the genes.

17. Video Clip: http://www.youtube.com/watch?v=yVqJ_mQazik

18. How does Evolution Work?
Natural Selection(survival of the fittest) is simply the logical result of four features of living systems:
VARIATION
Individuals in a
population
vary from one
another (different
genes caused by
mutations)
INHERITANCE
parents pass on their traits to
their offspring genetically
SELECTION
some variants reproduce more than others
TIME
successful variations accumulate over many generations

19. Evidences supporting Evolution5
Evidences supporting Evolution

20. Similarities in Genetic Code

21. 225 Million Years Ago the continents were together making a super continent called Pangaea
When the continent began to split populations were separated.

22. This increased the variety of living things because they all had to adapt to different and new environments and habitats.

24. ONE A Common Ancestor

26. SIMILARITIES IN STRUCTURES