1. MITOSIS
Interphase
Period between nuclear divisions.
DNA replicates (not visible).
Chromosomes not visible – can only see thread of chromatin.

2. Prophase
Centrioles visible at poles.
Microtubules create spindle framework.
Nucleolus disappears and nuclear membrane breaks down.
Chromatin threads become tightly coiled and are seen as chromosomes (the X shape).

3. Metaphase
Condensed chromosomes move to the middle.
Centromere of each pair is attached to a spindle fibre.

4. Anaphase
Sister chromatids separate and are dragged to opposite poles.
Centromeres still attached to the spindle fibres.

5. Telophase
Chromosomes decondense.
Nuclear envelope reforms.
Spindle fibres disappear.