Current Research

flies

The evolution of sexual dimorphism throughout the genome

Sexual dimorphism evolves through sexually antagonistic selection, but this selection acts on a largely shared genome, leading to intralocus sexual conflict. I use Drosophila to study the constraint imposed by correlated responses to selection, and how different parts of the genome evolve. Previously I have shown that the shared genome is a pervasive constraint on the evolution of sex biased gene expression throughout the genome. Two current projects are focussed on the evolution of sex specific genetic variance on the X chromosome and autosomes, and how they each contribute to the resolution or maintenance of intralocus sexual conflict.

Another project studies Y chromosome evolution and variation, the Y chromosome has a small population size, is selected upon efficiently, and subject to strong sweeps which means differences should evolve rapidly among isolated populations of Y chromosomes. For the very same reasons, however, variation within populations should be absent.

Funding

My PhD is funded via Uppsala University & Vetenskapsrådet. I have secured additional funding from the following organisations since 2012 (brackets indicate multiple successful applications):

  • Knut & Alice Wallenbergs Stiftelse
  • Helge Ax:son Johnsons Stiftelse
  • Kungliga Vetenskapsakedmien (*2)
  • Stiftelsen Lars Hiertas Minne (*2)
  • Uppsala University Graduate School on Genomes and Phenotypes (*3)

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Robert Griffin, Evolutionary Biologist

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