Selection on recombination in clines
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91 (3): 581--589 (1979)

Computer runs have been done to examine SLATKIN'S (1975) model for selection on recombination rates in linear sets of populations with environ- mental changes affecting two loci. In order to determine whether the suggested selection pressures on recombination do, in fact, exist, we follow the changes in frequency at a third locus that is polymorphic for alleles affecting the recombination rate between the two selected loci. With haploid or diploid selection models, there can be selection for increased recombination if the parameter values are chosen suitably, but changes in parameter values often lead to changes in the direction of selection, so that decreased recombination is favored, The selection for increased recombination is usually weak, while that for decreased recombination is frequently much stronger. Weaker selec- tion on the selected loci often leads to increasing selection for decreased recombination.
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