$DNA$ replication occurs in

Which phase of the cell cycle is also known as the resting phase?

In which phase of the cell cycle do $RNA$ and protein synthesis occur?

Select the correct statements regarding $S$-phase of interphase:
$I.$ Occurs between $G_{1}$ and $G_{2}$ phases.
$II.$ $DNA$ replication begins in the nucleus.
$III.$ Centrioles duplicate in the cytoplasm.
$IV.$ As $DNA$ is doubled,the number of chromosomes also doubles.
The option with correct statements is:

In the somatic cell cycle:

The $S-$phase of the cell cycle is characterized by