Stages of mitosis: Telophase and Cytokinesis
Telophase is the final stage of mitosis:
- Marks the end of mitosis as nuclear division is complete
- New nuclear envelopes form around each set of daughter chromosomes at the two poles.
- Two new nuclei form within the cell.
Cytokinesis is the final step in cell replication, but lies outside the mitosis process. This is when the cell fully divides , giving two complete and genetically identical daughter cells.
Mitosis refers to the division of chromosomes, not the formation of a new cell. Although these processes are strongly linked, mitosis is considered to have ended before cytokinesis.
In an animal cell, a ring forms at the centre of the cytoplasm and contracts, dividing it in two. Two daughter cells are created with a newly formed nucleus in each.
The separation of plant cells occurs slightly differently.
Rather than contractile elements (made from cytoskeleton) forming, a cell plate (made from both cell membrane and cell wall) forms and spreads across the centre of the cell, dividing it in two.