Talk:Worm Development

From Embryology

Sex Determination

  • xol-1, the master sex-switch gene in C. elegans, is a transcriptional target of the terminal sex-determining factor TRA-1. Hargitai B, Kutnyánszky V, Blauwkamp TA, Steták A, Csankovszki G, Takács-Vellai K, Vellai T. Development. 2009 Dec;136(23):3881-7. PMID: 19906855
"In the nematode Caenorhabditis elegans, sex is determined by the ratio of X chromosomes to sets of autosomes: XX animals (2X:2A=1.0) develop as hermaphrodites and XO animals (1X:2A=0.5) develop as males. ....Here we identify a consensus TRA-1 binding site in the regulatory region of xol-1, the master switch gene controlling sex determination and dosage compensation. xol-1 is normally expressed in males, where it promotes male development and prevents dosage compensation."
  • Somatic sexual differentiation in Caenorhabditis elegans. Wolff JR, Zarkower D. Curr Top Dev Biol. 2008;83:1-39. PMID: 19118662
  • The primary sex determination signal of Caenorhabditis elegans. Carmi I, Meyer BJ. Genetics. 1999 Jul;152(3):999-1015. PMID: 10388819