What is the process of cellular reproduction that occurs in the nucleus forming two identical nuclei is?

The process of cellular reproduction that occurs in the nucleus, resulting in the formation of two identical nuclei, is called mitosis. During mitosis, the cell's chromosomes are duplicated and evenly distributed into two daughter nuclei. This process involves several stages: prophase, metaphase, anaphase, and telophase, ultimately leading to cytokinesis, where the cell divides into two separate cells. Mitosis is essential for growth, tissue repair, and asexual reproduction in organisms.