Picture 1
In this picture it show that the Nucleolus dissolved and spindle diners form and attach to the centromeres of chromosomes.

Picture 2
This show that the chromosomes align across the middle of the cell.

Picture 3
This shows the spindle fibres pull replicated strands to opposite poles of the cell.

Picture 4
This show how the spindle diners dissolve a Nucleolus appears in each nucleus.nuclearmembrane forms around each set of chromosomes.