During the telophase stage of mitosis and meiosis two daughter nuclei are formed. The daughter nuclei begin forming the two ends of the cell.
zygote
Telophase and cytokenisis
During mitosis, the replicated chromosomes are divided into two genetically identical daughter nuclei, and then the cytoplasm divides during cytokinesis, forming two genetically identical daughter cells.
During mitosis, the replicated chromosomes are divided into two genetically identical daughter nuclei, and then the cytoplasm divides during cytokinesis, forming two genetically identical daughter cells.
When two nuclei have formed
two new daughter cells are formed
During the process of mitosis, the nucleus divides!
During telophase, new nuclear envelopes form around the two groups of daughter chromosomes, the new nucleoli begin to appear, and eventually, as the formation of the two daughter nuclei is completed, the spindle fibers disappear.
Upon finishing mitosis, you get two nuclei in a cell that is twice the normal size. When cytokinesis is also complete, you get two identical daughter cells.
Nuclear Fission
cytokinesis
If you mean when "does" the nucleus divide to form two identical nuclei, the answer is during mitosis. Mitosis is the process of cell reproduction. During this process the DNA is duplicated before the nucleus spilts into two identical nuclei each with their own identical copy of the parent cell, creating two new identical daughter cells.