Sister chromatids are linked together into one chromosome by a structure called a a. centriole b.
Chromosomes begin to move around in jerky movements.
Paired centromeres split, sister chromatids are liberated from each other and become chromosomes which begin to move to opposite poles. Nucleoli disappear and chromatin condenses becoming discrete chromosomes. A cell that is ready for syngamy is most always 11. A normal human cell completing mitosis is most always 12. A chromatid become a chromosome.