Nuclear division during the mitotic phase is called:

1. The mitotic phase has two portions, one for the nucleus and one for the cytoplasm. 2. The first portion of the mitotic phase is called karyokinesis, or nuclear division. 3. The second portion, cytokinesis, is the physical separation of the cytoplasmic components into the two daughter cells. 4. So karyokinesis divides the nucleus and cytokinesis divides the cell. _Source: OpenStax Biology for AP(R) Courses (CC BY 4.0), Ch 10 'Cell Reproduction', sections 10.1-10.5_