Sex chromosomes evolve from autosomes yet harbor many unique characteristics that differentiate them from autosomes and from each other.
Current work focuses on three fundamental outstanding questions about sex chromosomes:
- Epigenetic changes on sex chromosomes
- Y chromosomes and aging
- What drives the diversity of sex chromosomes across the tree of life?
In the past few years, we have begun to pursue an entirely novel research direction: Which genes and genetic pathways contribute to the evolution of behavioral reproductive isolation?
Current work focuses on several different Drosophila systems:
- Prezygotic isolation in the athabasca species group
- Pre- and postzygotic isolation in the nasuta species complex
- The evolution of hybrid swarms
Some genetic elements have selfish interests, and do not improve host fitness.
Current work focuses on different genomic conflicts: