How chromosome movements are organized? - Cuntorio

The movement phases of chromosomes are designated pro-metaphase, metaphase, and anaphase. During pro-metaphase, the nuclear lamina disintegrates and the nuclear envelope breaks into small vesicles permitting the fibers of the spindle to “invade” the nuclear region. The spindle microtubules then associate with kinetochores. These are called kinetochore microtubules. The microtubules from one pole