What will be the content of $DNA$ in a somatic cell at $G_2$ phase if its meiotic products have $20 \; pg$ of $DNA$ (in $; pg$)?

In $G_{1}$-phase of cell cycle,what would be the change in $DNA$ content of the cell?

Which of the following statements are correct for $G_{1}$-phase?
$I.$ It is the last substage of interphase
$II.$ Cell organelles do not increase in number
$III.$ Cell grows in size and content both
$IV.$ It synthesizes $RNAs$,proteins and other biochemicals for cell growth and subsequent replication of $DNA$
Choose the correct option

If a dividing cell is placed in a medium containing radioactive thymidine,the radioactivity will first be observed in:

In the $S$ phase of the cell cycle:

In a somatic cell cycle: