What describes the main event during mitosis telophase?

The main event during telophase of mitosis is the formation of a new nuclear envelope around the separated chromatids, which have reached opposite poles of the cell. This process marks the re-establishment of the nuclear structure, signaling the end of nuclear division. As the chromosomes begin to de-condense back into chromatin, the newly formed nuclei contain the same number of chromosomes as the original cell, ensuring that genetic material is preserved for the daughter cells.

Understanding telophase is crucial as it represents a pivotal point in cell division, where the cell is preparing to complete the process by moving towards cytokinesis, during which the cytoplasm divides.