Before revision: Sgo1 is only expressed in meiosis 1 for centromeric cohesion of the sister chromosomes, while Sgo2 is expressed in both cell cycles and is responsible for the segregation of chromosomes in the M phase.
After revision: Sgo1 is only expressed in meiosis 1 for centromeric cohesion of the sister chromosomes, while Sgo2 , expressed in meiosis and mitosis,at centromeres is responsible for the segregation of chromosomes in the M phase.