Stages of oocyte development in the zebrafish, Brachydanio rerio. Figure S3. These studies argued that germ cells were required for female development, but the mechanism by which they promoted female sexual development was not identified.
Moreover, recent identification of sex determiners such as gsdf and sexually dimorphic on the Y-chromosome sdY within fish make it clear that sex determination mechanisms are not limited to the above pathways [ 1516 ]. Barcodes were trimmed from each read, and N bases were trimmed from the end of each read, where N is the number of bases in the barcode.
Trends Ecol Evol. Over the past decades, zebrafish Danio rerio has become an important laboratory model organism for many areas of research for examples see e. Two experiments were performed to test the effect of rearing density on sex ratios.
This indicates that the wide-ranging sex ratios normally observed are most likely due to the parental genotypes. Red boxes indicate the the species was observed in any of the studies. Published online Apr
Physiol Rev 1— J Exp Anim Sci 27— Curr Opin Genet Dev — Since in mammals, including humans, sex is determined by CSD, the vast majority of our knowledge on the molecular regulation of vertebrate sex is based on data collected from such systems.
The mammalian doublesex homolog DMRT1 is a transcriptional gatekeeper that controls the mitosis versus meiosis decision in male germ cells. However, no universal sex-linked CNVR was found among the four families of zebrafish tested.