Notes from NEET topper

Prophase:

It is the first stage of karyokinesis.

Condensation of chromosomes takes place.

Each chromosome has two chromatids

The cell organelles like endoplasmic reticulum, golgi complexes, nucleolus and nuclear envelope disappear.

Centrosome begins to move towards opposite poles of the cell. Each centrosome radiates out microtubules called asters. The two asters together with spindle fibres forms mitotic apparatus.