Both species presented similar 2n, karyotype structure and hybridization patterns of repetitive DNA classes. Fast-developing preimplantation embryo progeny from heterogametic females in mammals. Other putative sex-determining genes genes know to play a role in vertebrate sex determination lie on autosomes Grafodatskaya et al.
Sex chromosome drive can have a number of consequences on the evolution of sexual reproduction processes, usually resulting from adaptations to counteract drive Presgraves through sexual selection and sexual conflicts. View author publications. Trends Ecol Evol 15 : — Enter your email address.
Articles by Montchamp-Moreau, C. Final images were optimized and arranged using Adobe Photoshop, version 7. Evolution 64 : —
Mank J. Nevertheless, the dynamics of drive and suppression has rarely been assessed in natural populations, given the paucity of known young and still-evolving systems. Their recurrent evolution is likely related to the peculiar structure of the Sry gene in Muroidea.
Open in a separate window. Polymorphism of the nucleolus organizer region NOR on the putative sex chromosomes of Arctic char Salvelinus alpinus is not sex related. Finally, they argue that copy number imbalance may be one contributor to the evolution of hybrid sterility in mice Fig.
Remarkably, Dox gave rise through retrotransposition to an autosomal suppressor, Not much yang Nmy.
It is rather likely that rDNA clusters have no bearing to sex chromosome differentiation in this case and that they follow their own evolutionary dynamics [ 70 ]. Cell : — Natural variation of the Y chromosome suppresses sex ratio distortion and modulates testis-specific gene expression in Drosophila simulans.