If the nucleus represents a large size in proportion to the cytoplasm of a cell,it indicates that:

$DNA$ and histone proteins are synthesized during the following phase of the cell cycle:

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

What happens to the $K.I$ (Karyoplasmic Index) during cell growth?

Among eukaryotes,replication of $DNA$ takes place in:

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: