Which of the following processes is not associated with the $G_1$ phase?

Assertion $A$: During interphase,the genetic material exists as chromatin.
Reason $R$: During interphase,chromosomes are present as thread-like structures.
Which option is correct for Assertion $A$ and Reason $R$?

In which phase of the cell cycle does the nucleus become enlarged?

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:

It is an inactive stage of cell division.

Match the following columns:

Column-$I$ (Cell)	Column-$II$ (Cell Cycle Duration)
$P$. Yeast	$I$. $20$ minutes
$Q$. $E. coli$	$II$. $1.5$ hours
$R$. Human cell	$III$. $24$ hours