day19 Patterns for evolution€¦ · MACROEVOLUTION CORNELL NOTES TITLE (PAGE 15) PAGE 15 PATTERNS...
Transcript of day19 Patterns for evolution€¦ · MACROEVOLUTION CORNELL NOTES TITLE (PAGE 15) PAGE 15 PATTERNS...
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PATTERNS FOR EVOLUTION2/3/20
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DO NOW▸ Compare and contrast founder effect and gene
flow
▸ What is speciation?
▸ How does reproductive isolation lead to speciation?
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AGENDA
▸ Patterns for evolution
▸ Summary
▸ Practice
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PATTERNS FOR MACROEVOLUTION
CORNELL NOTES TITLE (PAGE 15)
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PATTERNS FOR MACROEVOLUTION▸ Divergent evolution
▸ Convergent evolution
▸ Coevolution
▸ Punctuated equilibrium
▸ Adaptive radiation
▸Mass Extinction
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DIVERGENT EVOLUTION▸ Formation of new and different species from a
common ancestor
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CONVERGENT EVOLUTION▸ Evolution of similar features from DIFFERENT
ancestors
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COEVOLUTION▸ Two (or more) species affect each other’s
evolution
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PUNCTUATED EQUILIBRIUM▸ Rare and rapid speciation, followed by little to
no evolutionary change, and so forth…
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ADAPTIVE RADIATION▸ Common ancestor evolves into different
species, each adapted to a different environment
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MASS EXTINCTION▸ Extinction of a large number of species in a
short amount of time
▸ Due to catastrophic global event or rapid environmental change
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Check for understanding
1. Divergent evolution2. Convergent evolution3. Coevolution4. Punctuated equilibrium5. Adaptive radiation6. Mass extinction
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Check for understanding
1. Divergent evolution2. Convergent evolution3. Coevolution4. Punctuated equilibrium5. Adaptive radiation6. Mass extinction
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Check for understanding
1. Divergent evolution2. Convergent evolution3. Coevolution4. Punctuated equilibrium5. Adaptive radiation6. Mass extinction
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Check for understanding
1. Divergent evolution2. Convergent evolution3. Coevolution4. Punctuated equilibrium5. Adaptive radiation6. Mass extinction
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Check for understanding
1. Divergent evolution2. Convergent evolution3. Coevolution4. Punctuated equilibrium5. Adaptive radiation6. Mass extinction
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Check for understanding
1. Divergent evolution2. Convergent evolution3. Coevolution4. Punctuated equilibrium5. Adaptive radiation6. Mass extinction
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Check for understanding1. Divergent evolution2. Convergent evolution3. Coevolution4. Punctuated equilibrium5. Adaptive radiation6. Mass extinction
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WORKSHEET
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PRACTICE▸ Finish both worksheets and the summary!
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ILLUSTRATIVE SUMMARYPAGE 14 (UNDER DO NOW)
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ILLUSTRATIVE SUMMARY
‣ ALL TERMS must be included
‣ If you do a flow chart, you must explain the connections
‣ Use at least 4 colors
‣ Label as necessary
‣ Drawings must be different from what was shown in lecture
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HOMEWORK