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The origin of interlocus sexual conflict: is sex-linkage important? J. A. ANDRE S* & E. H. MORROW
 

Summary: The origin of interlocus sexual conflict: is sex-linkage important?
J. A. ANDRE´ S* & E. H. MORROW
*Evolutionary Biology Research Group, Department of Ecology and Animal Biology, Universidad de Vigo, Campus Universitario, Spain
Department of Animal Ecology, Evolutionary Biology Centre, Uppsala University, Uppsala, Sweden
Keywords:
sex-limited trait;
sex-linkage;
sexually antagonistic coevolution;
threshold model.
Abstract
Sexual conflict has been proposed as a potential selective agent in the
evolution of a variety of traits. Here, we present a simple model that
investigates the initial conditions under which sex-linked and sex-limited
harming alleles can invade a population. In this paper, we expand previous
threshold models to study how sex-linkage and sex determination mecha-
nisms affect the spreading conditions of a harming allele. Our models provide
new insights into how sexual conflict could originate, showing that in diploid
organisms the probability of a new harming allele spreading is independent of
both the genetic sex determination system and the dominance relationships.
However, the incidence of interlocus sexual conflicts in the initial steps of the

  

Source: Andrés, José - Department of Biology, University of Saskatchewan

 

Collections: Biology and Medicine