[9] Adaptation

[9] Adaptation - Studying Adaptation Reading Chapter...

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Studying Adaptation Reading: Chapter 10 (just those sections covered in the notes)
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Objectives What is an adaptation? How do we test if a trait is adaptive? Experimental Observational Comparative Phenotypic plasticity Trade-offs & Constraints
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Adaptation An adaptation is a trait that increases the fitness of the individual- arise by selection, but the process may be aided (or hindered) by drift Testing hypotheses concerning whether traits in organisms are adaptive is a major component of evolutionary biology The adaptive significance of some traits are not always obvious How do we test hypotheses about adaptations?
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Testing Hypotheses about Adaptation: Oxpeckers p364
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Oxpecker Exposure and Tick Loads p365
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Oxpecker Exposure and Wounds
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Oxpecker Exposure and Earwax
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Things to keep in mind when studying adaptations 1. Differences among populations are not always adaptations 2. Not every trait an organism possesses is adaptive 3. Not every adaptation is perfect Three methods to study adaptations : Experimental studies observational studies comparative studies
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The Tephritid fly Zonosemata and the Jumping Spider: Experimental Approach Text Page 368 Fig 10.5 p 368
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This note was uploaded on 12/23/2010 for the course BIOL 359 taught by Professor Johnnathwitt during the Winter '09 term at Waterloo.

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[9] Adaptation - Studying Adaptation Reading Chapter...

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