Here's why:
* Interphase: This is the stage where the cell grows, replicates its DNA, and prepares for division. While the nucleus is present and functioning during interphase, nuclear division itself doesn't happen.
* Mitosis: This is the actual process of nuclear division. It involves four distinct phases: prophase, metaphase, anaphase, and telophase. During these phases, the nuclear envelope breaks down, chromosomes condense, and the duplicated chromosomes are separated into two new nuclei.
So, mitosis is the specific phase where nuclear division, also known as karyokinesis, occurs.
