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FROM LECTURE 5:  EXAMPLES OF EVOLUTION BY NATURAL SELECTION

Selection on ST/CH inversion polymorphism in laboratory experiment by Dobzhansky.  Plot shows trajectory of gene frequency change for ST "allele", starting an initial gene frequency of pST = 0.2 .

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Figure from J. Roughgarden.  1979.  Theory of Population Genetics and Evolutionary Ecology: An Introduction.  MacMillan, New York, NY.
          


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