Nuclear and cytoplasmic division occur in the M phase of the cell cycle.

Here's a breakdown:

* M phase (Mitosis) is the shortest stage of the cell cycle and is responsible for cell division. It has two main parts:

* Karyokinesis: The division of the nucleus, which includes the condensation of chromosomes, alignment at the metaphase plate, and separation of sister chromatids.

* Cytokinesis: The division of the cytoplasm, resulting in the formation of two daughter cells, each with its own nucleus and a complete set of organelles.

So, while both nuclear and cytoplasmic division are separate processes, they occur together during the M phase of the cell cycle to ensure that the cell divides successfully into two identical daughter cells.