Prophase :
(i) Replicated chromosomes, each consisting of 2 chromatids, condense and become visible.
(ii) Microtubules are assembled into mitotic spindle.
(iii) Nucleolus and nuclear envelope disappear.
(iv) Centriole moves to opposite poles.
Metaphase :
(i) Spindle fibres attached to kinetochores (small disc-shaped structures at the surface of centromers) of chromosomes.
(ii) Chromosomes line up at the equator of the spindle to form metaphase plate.
Anaphase :
(i) Centromeres split and chromatids separate.
(ii) Chromatids move to opposite poles.
Telophase :
(i) Chromosomes cluster at opposite poles.
(ii) Nuclear envelope assembles around chromosome cluster.
(iii) Nucleolus, golgi complex, ER reform.
