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Copyright 2005 by the Genetics Society of America DOI: 10.1534/genetics.105.041301
 

Summary: Copyright 2005 by the Genetics Society of America
DOI: 10.1534/genetics.105.041301
The Evolution of Plastic Recombination
Aneil F. Agrawal,*,1
Lilach Hadany
and Sarah P. Otto*
*Department of Zoology, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada and

Department of Biological Sciences, Stanford University, Stanford, California 94305-5020
Manuscript received January 29, 2005
Accepted for publication July 7, 2005
ABSTRACT
Empirical data suggest that recombination rates may change in response to stress. To study the evo-
lution of plastic recombination, we develop a modifier model using the same theoretical framework used
to study conventional (nonplastic) modifiers, thus allowing direct comparison. We examine the evolution
of plastic recombination in both haploid and diploid systems. In haploids, a plastic modifier spreads by
forming associations with selectively favored alleles. Relative to nonplastic effects, selection on the plastic
effects of a modifier is both much stronger and less sensitive to the specifics of the selection regime (e.g.,
epistasis). In contrast, the evolution of plastic recombination in diploids is much more restricted.
Selection on plasticity requires the ability to detect DNA damage or cis-trans effects as may occur through

  

Source: Agrawal, Aneil F. - Department of Ecology and Evolutionary Biology, University of Toronto
Otto, Sarah - Department of Zoology, University of British Columbia

 

Collections: Environmental Sciences and Ecology