Maturation promoting factor $(MPF)$ formation triggers the cell to cross which phase transition?

What is the number of chromosomes that reach each pole at the end of anaphase?

The chromosomes cluster at opposite poles and their identity is lost as discrete elements during

Choose the correct combination of options to select the correct statement for prophase:
$I.$ Chromosomal material condenses to form compact mitotic chromosomes.
$II.$ The assembly of mitotic spindle is initiated by the microtubules.
$III.$ Cells do not show organelles when viewed under the prophase.
$IV.$ The nucleolus or nucleoli degenerate completely.

Spindle apparatus is formed during which stage of mitosis?

Which of the following is $NOT$ applicable to the $S$ phase of the cell cycle?