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From the origin of sex-determining factors to the evolution of sex-determining systems

  • Tobias Uller
  • Heikki Helanterä
Publishing year: 2011
Language: English
Pages: 163-180
Publication/Series: Quarterly Review of Biology
Volume: 86
Issue: 3
Document type: Journal article
Publisher: University of Chicago Press

Abstract english

Sex determination is typically classified as either genotypic or environmental. However, this dichotomy obscures the developmental origin and evolutionary modification of determinants of sex, and therefore hinders an understanding of the processes that generates diversity in sex-determining systems. Recent research on reptiles and fish emphasizes that sex determination is a multifactorial regulatory process that is best understood as a threshold dichotomy rather than as the result of genetically inherited triggers of development. Here we critically assess the relationship between the developmental origin of sex-determining factors and evolutionary transitions in sex-determining systems. Our perspective emphasizes the importance of both genetic and nongenetic causes in evolution of sex determination and may help to generate predictions with respect to the evolutionary patterns of sex-determining systems and the underlying diversity of developmental and genetic regulatory networks.


  • Biological Sciences


  • ISSN: 0033-5770
Tobias Uller
E-mail: tobias.uller [at]


Evolutionary ecology

+46 46 222 30 94


Sölvegatan 37, Lund


Research group

Experimental Evolution, Ecology & Behaviour


Doctoral students and postdocs

I am currently about to move to Lund from University of Oxford. For details about DPhil students and postdocs in my previous research group based at the Edward Grey Institute, please click here

Downloads & links

CV (pdf; 241 kB)