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Originally published as Genetics Published Articles Ahead of Print on April 3, 2007.
Genetics, Vol. 176, 715-719, May 2007, Copyright © 2007
doi:10.1534/genetics.106.067215
Adaptation of a Quantitative Trait to a Moving Optimum
Michael Kopp1 and Joachim Hermisson
Section of Evolutionary Biology, Department Biology II, Ludwig-Maximilian-University, Munich, Germany
1 Corresponding author: Section of Evolutionary Biology, Department Biology II, Ludwig-Maximilian-University Munich, Biozentrum, Grosshadernerstrasse 2, 82152 Planegg-Martinsried, Germany.
E-mail: kopp{at}zi.biologie.uni-muenchen.de
We investigate adaptive evolution of a quantitative trait under stabilizing selection with a moving optimum. We characterize three regimes, depending on whether (1) the beneficial mutation rate, (2) the fixation time, or (3) the rate of environmental change is the limiting factor for adaptation. If the environment is rate limiting, mutations with a small phenotypic effect are prefered over large mutations, in contrast to standard theory.
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