Call for abstracts: symposium on the Evolution and Regulation of Sex Chromosomes and Sex Determination at SMBE2025 Annual meeting of the society for molecular biology and evolution (SMBE) willbe held inJuly 20-24, 2025, in Beijing, China Qi Zhou from Zhejiang University and Wen-Juan Ma from Vrije Universiteit Brussel are pleased to announce the upcoming symposium on the Evolution and Regulation of Sex Chromosomes and Sex Determinationat SMBE2025. Sex chromosomes are prevalent in eukaryotes and have evolved independently. However, it remains a mystery how sex chromosomes stopped recombination, and why sex chromosomes remain highly stable in some lineages like mammals and birds but undergo frequent turnovers in many others. Additionally, the upstream sex-determining genes are largely unknown in majorities of species. And among the few species with the sex-determining genes identified, it is unclear how their downstream pathway is structured and evolved. Excitingly with the advent of genomics, an increasing number of non-model species begin to offer insights into these fundamental questions. Recent studies identified sex-determining regions and characterized regulatory mechanisms underlying sex determination and sexual differentiation across a wide range of species. We are pleased to confirm Prof. Tatiana Giraud (Université Paris-Saclay, CNRS) as an invited speaker. She is a pioneer in studying sex chromosomes of various ecological and agriculturally important fungal species. Her work will be setting the stage for contributed speakers and together offer a comprehensive perspective on the evolution and regulation of sex chromosomes and sex determination. Deadline for abstract submission: Thursday, January 30, 2025, 23:59 (GMT +8). For more information and to submit your abstract, please visit: https://smbe2025.scimeeting.cn/en/web/index/25070 Don't miss the opportunity to share your research, engage in stimulating discussions, and network with peers in this exciting area of evolutionary biology! We look forward to seeing you in Beijing this summer! Best regards, Wen-Juan Ma Prof. Dr. Wen-Juan Ma Assistant Professor Evolutionary Genomics of Sex Lab Research Group of Ecology,Evolution and Genetics (bDIV) Biology Department Vrije Universiteit Brussel Pleinlaan 2 - 1050 Brussels, Belgium Office F5.60 T +32 (0)2 629 3416 http://www.wmalab.com https://bdiv.research.vub.be/en/home-0 https://academic.oup.com/jeb/pages/why-publish wen-juan.ma@vub.be (to subscribe/unsubscribe the EvolDir send mail to golding@mcmaster.ca)