Final answer:
The final stage of mitosis is telophase, during which the nuclear envelope is reformed around chromosomes at each pole, chromosomes decondense, and the mitotic spindle is disassembled, followed by cytokinesis.
Step-by-step explanation:
During the final stage of mitosis, which is called telophase, a nuclear envelope reassembles around each group of chromosomes to form the two daughter nuclei. Telophase is characterized by several key events: the chromosomes that have reached the poles of the dividing cell begin to decondense or unravel, transitioning back to a loosely packed chromatin configuration. Moreover, nucleoli reappear within the nuclear areas, and the mitotic spindle - the structure that previously separated the sister chromatids - is broken down. The reformation of the nuclear envelope signifies the end of mitosis, with each daughter cell receiving a complete complement of genetic material, and is followed by cytokinesis where the cell divides into two distinct new cells.