Biology 11 Lesson Outline Date Oct 26 th
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Last lessons Objective
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Fossils and changes with time |
Evaluation |
| Today’s Objectives |
1. Isolation mechanisms (5) http://abacus.gene.ucl.ac.uk/jim/Sp/isolmech.html
2. Directional Change http://study.com/academy/lesson/what-is-directional-selection-examples-definition-graph.html
3. Non Directional Change
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| Topic
Number One |
Question: What can separate one species from reproducing with another species?
What “barriers” between species can be crossed?
What is an example of a “boing” situation?
Using the hand out on snails, can you give examples for 4 isolation mechanisms in other species.
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Lab due at end of the week |
| Topic
Number Two |
Question: How can a family tree be used to show changes in the structures found in elephant teeth?
Note 1. Record data on graph with family number 2. Connect related family tree names. 3. No graph line can go vertical. Why? 4. Plates on the teeth are linked to types of food the elephant can eat. 5. How is this related to the evolution of the elephant?
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| Topic
Number Three |
Directional Change is a slow and gradual change. An example is the case study of evolution of the horse.
In the elephant lab there is both directional and nondirectional change.
How are these changes related to isolation mechanisms? |
Next Class Exam
Make key for next class |
| Text book Ref
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Chapter Two | Table |
| You tube Reference | Directional Change
https://www.youtube.com/watch?v=Jw8UGcRCxR0
Family tree history of elephants https://www.youtube.com/watch?v=kdzXQOBg9Ng
Elephant Evolution https://www.youtube.com/watch?v=utNxHs6ghSw
Using teeth to explore evolution https://www.youtube.com/watch?v=rDIBtP85F3c
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| Take Home Message | Isolate a species and that can change how it evolves.
Some changes may be linear and other may branch. Why?
Why would a wooly mammoth not survive if it was genetically engineered today? |
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