In which phase does the synthesis of proteins required for spindle fiber formation occur?

The condensation of chromatin material starts in which phase of the cell cycle?

In which phase do the chromosomes spread throughout the cell?

The chromosome number in plants can be increased by

Choose the correct statement regarding mitosis.

Statement $P$ : Small disc-shaped structures called kinetochores are present on the surface of the centromeres.
Statement $Q$ : Spindle fibers attach to the centromeres of the chromosomes.