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

Which phase of the interphase is known as the growth phase?

$A$: The duration of the cell cycle varies in different organisms.
$R$: The duration of the cell cycle varies in different types of cells.

Chromatin fibres duplication,Genetic material-$4C$,Histone protein synthesis,Membranous organelle duplication,$DNA$ replication,centriole duplication. How many of the above features are associated with the synthesis $(S)$ phase of the cell cycle?

The initial phase of interphase is:

All cells undergo which of the following processes?