What is the final phase of mitosis, characterized by the reformation of the nuclear envelope at opposite ends of the cell?

The final phase of mitosis is telophase, which is characterized by several key events that signal the end of mitosis. During telophase, the chromatids that have been separated during anaphase reach the opposite poles of the cell. Once they arrive, a new nuclear envelope starts to form around each set of separated sister chromatids, leading to the production of two distinct nuclei within the cell.

This reformation of the nuclear envelope is crucial because it restores the cell’s genetic material into a protected environment, facilitating proper functioning and preparation for subsequent cellular processes. In addition to nuclear envelope reformation, the chromatin begins to condense back into its less coiled state, and the spindle fibers disassemble, completing the segregation of the genetic material.

The other phases of mitosis play specific roles in cell division, but they do not encompass the events described in telophase. For example, prophase involves the condensation of chromatin and the formation of the mitotic spindle, metaphase centers the chromosomes at the cell's equator, and anaphase is when the sister chromatids are pulled apart toward opposite ends of the cell. Therefore, telophase is defined by the completion of these processes and the restoration of the nuclear structures