Which organelles are reformed at the end of $Telophase$?

What is a kinetochore?

The first phase of mitosis which follows interphase is

Explain $G_{2}$ phase in short.

Spindle fibers attach to kinetochores of chromosomes during

Select the correct statement regarding $S-$phase of interphase.
$I.$ Occurs between $G_1$ and $G_2$ phase.
$II.$ $DNA$ replication begins in the nucleus.
$III.$ Centrioles duplicate in the cytoplasm.
$IV.$ As $DNA$ is doubled,the number of chromosomes also doubles.