K.%20Adaptationch.11

K.%20Adaptationch.11 - Natural selection! and...

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1 Natural selection and adaptation Outline of lecture: • Adaptations – Overview – Nonadapative traits – Preadaptation, aptations, exaptations and adapatations – Recognizing adaptations Natural selection and adaptation Outline of lectures, cont’d: • Natural selection – Introduction – Experimental studies – Levels of selection Adaptations Aptations Gould, S.J., Vrba, E.S. 1982. Exaptation -- a missing term in the science of form. Paleobiology 8, 4-15. Exaptations Nonadaptive traits
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2 Recognizing adaptations 1. Complexity. 2. Design. 3. Experimental evidence 4. Comparative method The comparative method and independent contrasts The comparative method and independent contrasts The comparative method and independent contrasts One independent test Two independent tests The comparative method and independent contrasts Body size coldness of climate Natural selection Darwin: “If variations useful to any organic being ever occur, assuredly individuals thus characterized will have the best chance of being preserved in the struggle for life.”
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This note was uploaded on 01/31/2010 for the course EEB 390 taught by Professor Staff during the Winter '08 term at University of Michigan.

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K.%20Adaptationch.11 - Natural selection! and...

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