In a cell that's not dividing, the DNA is all spread out in long strings.
2. Before it divides, the cell has to grow and increase the amount of subcellular structures such as mitochondria and ribosomes.
3. It then duplicates its DNA - so there's one copy of each new cell. The DNA copied and forms X-shaped chromosomes. Each 'arm' of the chromosome replicates the other.
Once the contents and DNA have been copied, the cell is ready from mitosis.
4. The chromosomes line up at the centre of the cell and cell fibres pull them apart. The two arms of each chromsome go to opposite ends of the cell.
5. Membranes form around each of the sets of chromosomes. These become the nuclei of the two new cells - the nucleus has divided.
6. Lastly, the cytoplasm and cell membrane divide.
The cell has now produces two new daughter cells. The daughter cells contain the same DNA - they're identical. Their DNA is also identical to the parent cell.