1. Agenda: Warm-Up Review
March 29, 2018 EQ: How do species evolve due to natural selection? Warm-Up: Which organisms have four limbs? Which have hair?
Agenda:
Warm-Up
Review

2. Explain the relationship between: -genetics -natural selection -evolution

3. Sect 1- Change Over Time
Adaptation
Species
Evolution

4. Evidence of Changes Over Time
Fossils
What type of rocks?
Where do you find the newest fossils?
Oldest?
Extinction
Relative dating
What evidence does the fossil record
show?

5. Absolute/Radiometric dating
Half-life
C-14 N
Rock formation
100 g
0 g 1
(5,730 y)
50 g 2
(11, 460 y)
25 g
75 g 3
(17,190 y)
12.5 g
87.5 g
Carbon-14 decays into Nitrogen
Half-life of Carbon-14 is 5,730 years

6. Absolute Dating
When determining the age of Older fossils, scientists use Uranium isotopes. Uranium Decays Into Lead.

7. Rates of Evolution
Punctuated Equilibria vs. Gradualism (Microevolution) (Macroevolution)

8. Evidence of Ancestry and Evolution
What bones show whales are related to land mammals?
DNA
Embryology
Homologous structures
Fossils

9. How Does Evolution Happen?
Natural Selection
-overproduction
-variations
-competition
-successful reproduction
***Finches!
***Peppered Moths!
What causes variations?
How is genetics related to evolution?
When do 2 populations evolve into 2 different species?