Genomics of sexual dimorphism
Alison Wright, from University of Sheffield in UK, will give a talk about "Genomics of sexual dimorphism".
Males and females are often subject to conflicting selection pressures, yet they share an almost identical genome. This genetic correlation can result in sexual conflict, which can create a significant evolutionary burden on populations yet also act as an important force in adaptation. We investigated the genomic consequences of sexual conflict and the mechanisms by which it can be resolved, ultimately leading to the evolution of sexual dimorphism. First, we tested theoretical predictions about the role of sexual selection in catalyzing various stages of sex chromosome evolution. Second, we investigated the potential for regulatory evolution to resolve sexual conflict across the entire genome by employing a novel population genomic approach combining patterns of genetic diversity and inter-sexual divergence in allele frequency. Together, our findings suggest an important role for sexual conflict in shaping broad patterns of genome diversity, and show that regulatory evolution is a rapid and efficient route to the resolution of conflict and ultimately the evolution of sexually dimorphic phenotypes.