During which phase of mitosis does the nuclear envelope re-form and the nucleoli reappear?

The answer is telophase.

Mitosis is a type process cell division into two identical cells. It consists of several phases.

- Prophase: Chromatin in the nucleus condenses and chromosomes pair up. Nuclear envelope breaks down and nucleoli disappear.

- Metaphase: Chromosomes line up at the center of the cell.

- Anaphase: The sister chromatids separate from each other to the opposite sides of the cells.

- Telophase: Nuclear envelope re-forms around each set of chromosomes on two opposite sides of the cells and nucleoli reappear.