1. Theory of evolution

2. What is a theory? Shows cause and effect relationships
Based on experimental results
Based on several assumptions
Used to make predictions

3. Who is the considered the father of evolutionary theory?

4. Charles darwin
On The Origin of Species

5. Galapagos islands

6. Sea turtles

7. 14 species of finches

8. 5 main ideas 1. Overproduction 2. Competition 3. Variation
4. Natural Selection
5. Speciation

9. overproduction
Produce tons of offspring to ensure that your genes are passed on, since most of your offspring will die.

10. Competition
Intraspecies
Interspecies

11. What can species compete for?

12. Variation
No two individuals are alike. This changes everyone’s chances of survival and reproduction. Our variety of genes are passed on…

13. Natural selection This is survival of the fittest
Those who are better adapted survive to reproduce and pass on good genes.
Those who don’t, die, and do not pass on their bad genes.

14. speciation New species arise by accumulated inherited variations.
How can you tell something is a new species?

15. How did we evolve?
science/ocr_gateway_pre_2011/environment /4_survival_of_fittest4.shtml

16. Types of adaptations Structural Physiological Behavioral
Turn to page 98 and list 3 examples of each
Structural
Physiological
Behavioral

17. behavioral Watch some of these crazy behavioral adaptations by animals
y_NE
FoCw
Was the Gibbon’s behavior adapative?

18. Rate of evolution How fast does evolution occur?
GRADUALISM- evolution is slow and continuous over many years. This is supported by fossil records of many species.
Why change if your environment never does?

19. equilibrium
Plants or animals that show little change over thousands of years are said to be in equilibrium.

20. Punctuated equilibrium
When a species encounters extreme environmental changes, it is forced to change. If it dies off, other species come along and occupy that niche.
That species goes through rapid adaptations as it fills the niche. Tons of changes happen very fast.
This graphs shows 2 species and their niche overlap