title: Sex chromosome drive.
abstract: Sex chromosome drivers are selfish elements that subvert Mendel's first law of segregation and therefore are overrepresented among the products of meiosis. The sex-biased progeny produced then fuels an extended genetic conflict between the driver and the rest of the genome. Many examples of sex chromosome drive are known, but the occurrence of this phenomenon is probably largely underestimated because of the difficulty to detect it. Remarkably, nearly all sex chromosome drivers are found in two clades, Rodentia and Diptera. Although very little is known about the molecular and cellular mechanisms of drive, epigenetic processes such as chromatin regulation could be involved in many instances. Yet, its evolutionary consequences are far-reaching, from the evolution of mating systems and sex determination to the emergence of new species.
authors.affiliation: Laboratoire Évolution Génomes et Spéciation, CNRS UPR9034, Gif-sur-Yvette, France and Université Paris-Sud, Orsay, France.
authors.forename: Quentin
authors.initials: Q
authors.lastname: Helleu
authors.affiliation: Laboratoire Évolution Génomes et Spéciation, CNRS UPR9034, Gif-sur-Yvette, France and Université Paris-Sud, Orsay, France.
authors.forename: Pierre R
authors.initials: PR
authors.lastname: Gérard
authors.affiliation: Laboratoire Évolution Génomes et Spéciation, CNRS UPR9034, Gif-sur-Yvette, France and Université Paris-Sud, Orsay, France.
authors.forename: Catherine
authors.initials: C
authors.lastname: Montchamp-Moreau
mesh_terms: D000818:Animals; D004175:Diptera / Q000235:genetics*; D019143:Evolution, Molecular; D053476:Extinction, Biological; D049810:Genetic Speciation; D008957:Models, Genetic; D012377:Rodentia / Q000235:genetics*; D012730:Sex Chromosomes; D019849:Sex Determination Processes; D012737:Sex Factors; D012744:Sex Ratio