What is the final stage of cell division where the nucleus reforms and DNA loosens?

The final stage of cell division is characterized by the reformation of the nucleus and the loosening of DNA. This process occurs during telophase, which is the concluding phase of mitosis and meiosis. During telophase, after the chromosomes have been separated and pulled to opposite sides of the cell, they begin to de-condense back into a less tightly packed form known as chromatin.

The nucleus re-establishes itself around each set of chromosomes, resulting in two distinct nuclei within the dividing cell. This transition is crucial for ensuring that when cytokinesis occurs afterward, each daughter cell receives a complete set of genetic information packaged appropriately. The correct answer encapsulates both essential aspects of telophase: the reformation of the nucleus and the loosening of DNA, marking the end of the division process before the cell ultimately splits into two.