In which of the phases of mitosis there is a thickening (spiralization) of chroiosomes, the nucleolus disappears

In which of the phases of mitosis there is a thickening (spiralization) of chroiosomes, the nucleolus disappears, the nuclear envelope disintegrates.

All this happens in prophase.
1 destruction of the nuclear envelope
2.Divergence of centrioles to the poles of the cell
3. Formation of fission spindle threads
4. Disappearance of the nucleolus
5.Spiralization of chromosomes



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