Skip to main content

Vicoso Group

Sex-Chromosome Biology and Evolution

Sex chromosomes, such as the X and Y of mammals, are involved in sex-determination in many animal and plant species. Their sex specificity leads them to evolve differently from other chromosomes, and acquire distinctive biological properties. The Vicoso group investigates how sex chromosomes evolve over time, and what biological forces are driving their patterns of differentiation.

The Vicoso group is interested in understanding several aspects of the biology of sex chromosomes, and the evolutionary processes that shape their peculiar features. By combining the use of next-generation sequencing technologies with studies in several model and non-model organisms, they can address a variety of standing questions, such as: Why do some Y chromosomes degenerate while others remain homomorphic, and how does this relate to the extent of sexual dimorphism of the species? What forces drive some species to acquire global dosage compensation of the X, while others only compensate specific genes? What are the frequency and molecular dynamics of sex-chromosome turnover?

On this site:


Image of Carolina Barata

Carolina Barata


Image of Vincent Bett

Vincent Bett

PhD Student

Image of Julia Cihak

Julia Cihak

Research Technician

Image of Marwan Elkrewi

Marwan Elkrewi

PhD Student

Image of Réka Kelemen

Réka Kelemen

PhD Student

Image of Clementine Lasne

Clementine Lasne


Image of Lorena Layana

Lorena Layana

PhD Student

Image of Ariana Macon

Ariana Macon

Research Technician

Image of Andrea Mrnjavac

Andrea Mrnjavac

PhD Student

Image of Evgeniya Pravdolyubova

Evgeniya Pravdolyubova

PhD Student

Image of Gemma Puixeu Sala

Gemma Puixeu Sala


Image of Julia Raices

Julia Raices

PhD Student

Current Projects

Sex chromosome turnover and conservation | Dosage compensation in female-heterogametic species | Gene expression evolution in sexual and asexual species


Puixeu Sala G. 2023. The molecular basis of sexual dimorphism: Experimental and theoretical characterization of phenotypic, transcriptomic and genetic patterns of sex-specific adaptation. Institute of Science and Technology Austria. View

de Castro Barbosa Rodrigues Barata C, Snook RR, Ritchie MG, Kosiol C. 2023. Selection on the fly: Short-term adaptation to an altered sexual selection regime in Drosophila pseudoobscura. Genome biology and evolution. 15(7), evad113. View

Puixeu Sala G, Macon A, Vicoso B. 2023. Sex-specific estimation of cis and trans regulation of gene expression in heads and gonads of Drosophila melanogaster. G3: Genes, Genomes, Genetics. 13(8). View

De Jode A, Le Moan A, Johannesson K, Faria R, Stankowski S, Westram AM, Butlin RK, Rafajlović M, Fraisse C. 2023. Ten years of demographic modelling of divergence and speciation in the sea. Evolutionary Applications. 16(2), 542–559. View

Mrnjavac A, Khudiakova K, Barton NH, Vicoso B. 2023. Slower-X: Reduced efficiency of selection in the early stages of X chromosome evolution. Evolution Letters. 7(1), qrac004. View

View All Publications

ReX-Link: Beatriz Vicoso


since 2015 Assistant Professor, Institute of Science and Technology Austria (ISTA)
2009 – 2014 Postdoc, University of California, Berkeley, USA
2010 PhD, University of Edinburgh, Scotland, UK

Selected Distinctions

2017 Member of the Young Academy of the Austrian Academy of Sciences
2016 ERC Starting Grant
2016 FWF Standalone Grant
2011 DeLill Nasser Travel Award from the Genetics Society of America

Additional Information

Download CV
Open Vicoso lab website

theme sidebar-arrow-up
Back to Top