L567 lecture 12 - L567. Lecture 12. Evolutionary stability...

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L567. Lecture 12. Evolutionary stability of sex and recombination. 1. Motivation. Sex and recombination are anomalies for theory, and, from a pedagological point of view, these anomalies “capture” many of the ideas we have been studying (e.g.: mutation selection balance , geometric mean fitness, stable limit cycles, frequency- dependent selection). 2. Cost of sex (or the 2-fold advantage of obligate asexual repro.) a) the all-else-equal assumption, leads to b) the grandchildren asymmetry. c) what is the time to extinction for a sexual population? d) Ecological view of the cost of sex (per capita growth, K) 3. The advantages of sex (meiosis and syngamy) (i.e., all else is not equal). a) the macroevolutionary hypotheses i) Stanley (1975): sexual species speciate faster ii) Nunney (1986): obligately sexual species are less prone to extinction. 1
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L567. Lecture 12. b) the micoevolutionary hypothesis i) mutation clearance: ii) adaptive variation (or ecological genetic) hypotheses 4.
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This note was uploaded on 07/01/2011 for the course L 567 taught by Professor Curtis during the Fall '10 term at Indiana State University .

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L567 lecture 12 - L567. Lecture 12. Evolutionary stability...

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