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ORIGINAL ARTICLE doi:10.1111/j.1558-5646.2009.00695.x
 

Summary: ORIGINAL ARTICLE
doi:10.1111/j.1558-5646.2009.00695.x
DIFFERENCES BETWEEN SELECTION ON SEX
VERSUS RECOMBINATION IN RED QUEEN
MODELS WITH DIPLOID HOSTS
Aneil F. Agrawal1,2
1
Department of Ecology & Evolutionary Biology, University of Toronto, 25 Willcocks Street, Toronto, Ontario, M5S 3B2
Canada
2
E-mail: a.agrawal@utoronto.ca
Received September 3, 2008
Accepted February 19, 2009
The Red Queen hypothesis argues that parasites generate selection for genetic mixing (sex and recombination) in their hosts.
A number of recent papers have examined this hypothesis using models with haploid hosts. In these haploid models, sex and
recombination are selectively equivalent. However, sex and recombination are not equivalent in diploids because selection on sex
depends on the consequences of segregation as well as recombination. Here I compare how parasites select on modifiers of sexual
reproduction and modifiers of recombination rate. Across a wide set of parameters, parasites tend to select against both sex and
recombination, though recombination is favored more often than is sex. There is little correspondence between the conditions
favoring sex and those favoring recombination, indicating that the direction of selection on sex is often determined by the effects

  

Source: Agrawal, Aneil F. - Department of Ecology and Evolutionary Biology, University of Toronto

 

Collections: Environmental Sciences and Ecology