1. Date:
10/27/16
Topic:
Mechanisms of Evolution
Page # ___
Must wear uniforms/IDs!
10/27/16
EBHS
Admit Slip
Name one species that has changed over time (evolved) and explain how/why.

2. MCAS Open Response Practice
Natural Selection
MCAS Open Response Practice

3. Who discovered natural selection?
*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…

4. 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

5. 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

6. 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

7. 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??

8. 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

9. 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.

10. Evolution on the Galapagos
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11. Mechanisms of Evolution
Mutation
Gene Flow
Genetic Drift
Bottleneck Effect
Founder Effect
Natural Selection
Geographic Isolation

12. Mechanisms of Evolution: Posters
Make mini poster for assigned mechanism
Title, definition, picture
Will complete gallery walk to add to our notes