What is cytokinesis?

Cytokinesis is when a cell splits into two new cells after it has finished growing and copying its stuff.

Imagine you're sharing your favorite sandwich with a friend. First, you both copy the sandwich, like making identical copies of your lunch. Then, you split the sandwich in half so each of you gets one part. That’s kind of what happens during cytokinesis, the cell splits into two new cells, just like how you and your friend each get a half of the sandwich.

• The cell uses something like a belt around its middle to pull it apart.
• This belt tightens until poof! The cell is now two separate cells.
• Each new cell has all the parts it needs to keep growing and working.

It's like when you tie a shoelace and then pull both ends, your shoe becomes snug again. In the same way, the cell uses this special belt to divide itself neatly into two new cells.