1. You should have… claim, 3 evidence, 3 reasoning, rebuttal & conclusion
Must wear uniforms/IDs!
10/3/16
EBHS
Admit Slip
Write one paragraph (of at least 8 sentences) that answers the question: “Is Evolution Real?” using your notes from last night’s homework and the evolution lab from Friday.
You should have… claim, 3 evidence, 3 reasoning, rebuttal & conclusion
This will count as a 10 point quiz.
Date:
10/3/16
Topic:
Evolution Info 2
Page # ___

2. Evidence for Evo Fossils Embryos DNA (bases/amino acid sequences)
Homologous structures

3. Natural Selection
Populations of organisms change as their environment changes
Takes many generations
Does NOT occur in individuals! Only in populations! (You can’t grow a trait)
What influenced human changes?

4. Environmental Factors Impacting Human Evolution

5. Who discovered evolution?
*Charles Darwin
*Known as the “Father of Evolution”
Was going to be a preacher (priest)
But then he was asked to go on a voyage…

6. Maiden Voyage…
Great Britain was hoping to discover more lands to make their own
Government invited Charles Darwin (a naturalist) to go on a mission to learn about a new set of islands
Travelled on the HMS Beagle (ship)
To visit the Galapagos Islands

7. Amazing Finds…
Darwin was amazed to discover some creatures that lived no where else in the world
An entire group of unique species that only lived on the Galapagos islands
He stayed for a long time to study them

8. Most famous of the species?
Finch?
Sparrow?
Woodpecker?
Warbler?
Most famous of the species?
Anyone know?
The birds!
On each island he found all these different birds, with different colors, shapes, and sizes
They ate different food depending on the size/shape of their beak

9. Through research, he made an amazing discovery…
All the birds were FINCHES
Even though they looked so different, they were all related
Each island had a different type of finch
Only one type of finch on the mainland.
So what happened??

10. 1 Finch  13 Finches
This was the first evidence of evolution (change in a population over time)
What started as 1 species of finch ended up as 13 different species, based on the environment of the island

11. Why is this evidence of evolution through natural selection?
Think-Pair-Share
Why is this evidence of evolution through natural selection?
Talk with a partner for 5 minutes, write answer in your journal, and get ready to share your answer with the class
Use your HW notes to help you.

12. Essence of Darwin’s Ideas
Variation exists in natural populations
(2) Many more offspring are born each season than can possibly survive to maturity
(3) As a result, there is a struggle for existence
- competition
(4) Characteristics beneficial in the struggle for existence will tend to become more common in the population, changing the average characteristics of the population – adaptations
(5) Over long periods of time, and given a steady input of new variation into a population, these processes lead to the emergence of new species

14. Mutation  Changes in Traits
Can you CHOOSE to mutate?
NO!! Mutation is RANDOM.
Polydactyly = A mutation that leads to excess fingers/toes

15. Driving force of evolution?
One example?
Natural Selection!
What leads to differences in organisms?
MUTATIONS!
Accidental changes in the DNA that change the protein that change the trait

16. Driving force of evolution?
Another example?
Geographic Isolation
One group of organisms is split up due to environmental barrier (ex. mountain or river)
Environments change, so populations change  Become 2 different species

17. Natural Selection MCAS Open Response
Complete the Open Response question to the best of your ability
Use complete sentences and re-state the question in your answer.
If you can get ½ the total points on each OR, you will pass the MCAS
Always try to get full points though, just to be sure.

18. Natural Selection Open Response

19. Evo MCAS Hints* Common Ancestor = right answer!
^^ (Almost) always choose this
EXCEPTION: Analogous structures*
Structures that look similar in different animals due to function, do NOT mean they have common ancestor*

20. Evo MCAS Hints* How do we know they are related (common ancestor)?
DNA sequences
RNA sequences
Protein (amino acid sequences)
(The more in common, the more related)

21. Evo MCAS Hints* “Why did a population evolve?”
Organisms with traits that allow them to survive, reproduce and pass on those traits
Best adapted to the environment

22. Evo MCAS Multiple Choice