“…Cell division and gametogenesis are very active in the developing testis and ovary, where Ubc9 which regulates processes during meiosis and mitosis is expressed (Sakaguchi et al, 2007). Deficiency of Ubc9 in early post-implantation mouse embryos leaded to mitotic anomalies, including chromosome condensation and segregation defects (Vertegaal, 2007), and Ubc9 was involved in the development of mouse male germ cells (La Salle et al, 2008).…”