What is the process during cell division where the cell nucleus divides called?

The process during cell division where the cell nucleus divides is known as mitosis. Mitosis is a critical phase of the cell cycle, during which the chromosomes are duplicated and then evenly distributed to two daughter nuclei. The stages of mitosis include prophase, metaphase, anaphase, and telophase, each playing a crucial role in ensuring that the genetic material is accurately copied and segregated.

In contrast, meiosis is a special type of cell division that results in the formation of gametes (sperm and eggs), and it encompasses two rounds of division, ultimately leading to four genetically unique cells. Cytokinesis, while related to cell division, refers specifically to the division of the cytoplasm and its contents, which typically occurs after mitosis or meiosis is complete. Fission generally describes a form of asexual reproduction where a single organism divides into two or more separate entities, but it does not specifically refer to the division of the nucleus.

Understanding these distinctions allows for a clear comprehension of cellular processes and their respective functions in growth, reproduction, and maintenance of genetic continuity.