Benjamin Geffroy, Mathieu Besson, Núria Sánchez-Baizán, Frederic Clota, Alexander Goikoetxea, Bastien Sadoul, François Ruelle, Marie-Odile Blanc, Hugues Parrinello, Sophie Hermet, Eva Blondeau-Bidet, Marine Pratlong, Francesc Piferrer, Marc Vandeputte, François Allal
In most animals, sex determination occurs at conception, when sex chromosomes are segregated following Mendelian laws. However, in multiple reptiles and fishes, this genetic sex can be overridden by external factors after fertilization or birth. In some species, the genetic sex may also be governed by multiple genes, further limiting our understanding of sex determination in such species. We used the European sea bass ( Dicentrarchus labrax ) as a model and combined genomic (using a single nucleotide polymorphism chip) and transcriptomic (RNA-Sequencing) approaches to thoroughly depict this polygenic sex determination system and its interaction with temperature...
December 14, 2021: Proceedings of the National Academy of Sciences of the United States of America