The centrosome duplicates during the

Which of the following $CdKs$ and cyclins comes under the $G_{1}$ checkpoint?

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 $; pg$)?

$DNA$ replication occurs in which phase of the cell cycle?

In the given diagram,in which of the phases $W, X, Y$ and $Z$ does the genetic material of chromosomes double?

If an egg of an organism has $10 \; pg$ of $DNA$ in its nucleus,how much $DNA$ would a diploid cell of the same organism have in the $G_2$ phase of the cell cycle (in $; pg$)?