day19 Patterns for evolution€¦ · MACROEVOLUTION CORNELL NOTES TITLE (PAGE 15) PAGE 15 PATTERNS...

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?

AGENDA

▸ Patterns for evolution

▸ Summary

▸ Practice

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

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

Check for understanding

1. Divergent evolution2. Convergent evolution3. Coevolution4. Punctuated equilibrium5. Adaptive radiation6. Mass extinction

Check for understanding

1. Divergent evolution2. Convergent evolution3. Coevolution4. Punctuated equilibrium5. Adaptive radiation6. Mass extinction

Check for understanding

1. Divergent evolution2. Convergent evolution3. Coevolution4. Punctuated equilibrium5. Adaptive radiation6. Mass extinction

Check for understanding

1. Divergent evolution2. Convergent evolution3. Coevolution4. Punctuated equilibrium5. Adaptive radiation6. Mass extinction

Check for understanding

1. Divergent evolution2. Convergent evolution3. Coevolution4. Punctuated equilibrium5. Adaptive radiation6. Mass extinction

Check for understanding1. Divergent evolution2. Convergent evolution3. Coevolution4. Punctuated equilibrium5. Adaptive radiation6. Mass extinction

WORKSHEET

PRACTICE▸ Finish both worksheets and the summary!

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

HOMEWORK