Evolutionary history of recombination on newly evolved sex chromosomes


Sex chromosomes have evolved countless times in numerous animal and plant species and represent an important example of evolutionary convergence. Despite the prevalence and importance of sex chromosomes, we understand little about their early evolution, largely because our knowledge is limited to systems with ancient and highly derived sex chromosomes. This project will address the early stages of sex chromosome evolution in an emerging model system, the guppy, to answer questions about how and why sex chromosomes emerge, under what conditions they are maintained, and how they diverge.


Bachtrog D, Mank JE, Peichel CL, Kirkpatrick M, Otto SP, Ashman TL, Hahn MW, Kitano J, Mayrose I, Ming R, Perrin N, Ross L, Valenzuela N, Vamosi JC. (2014) Sex determination: Why so many ways of doing it? PLoS Biology in press


Perry, JC, Harrison PW, Mank JE (2014) The ontogeny and evolution of sex-biased gene expression in Drosophila melanogasterMolecular Biology and Evolution in press


Pointer MA, Harrison PW, Wright AE, Mank JE (2013) Masculinization of gene expression is associated with exaggeration of male sexual dimorphism.  PLoS Genetics 9: e1003697


Moghadam HK, Pointer MA, Wright AE, Berlin S, Mank JE (2012) W chromosome expression responds to female-specific selection. Proceedings of the National Academy of Sciences, USA 109: 8207-8211


Wright AE, Moghadam HK , Mank JE (2012) Trade-off between selection for dosage compensation and masculinization on the avian Z chromosome. Genetics 192: 1433-1445

Biological Areas:



Genes, development and STEM approaches to biology