The phase between the two successive $M$ phases is called as

Two sister chromatids are attached with

$A$ plant cell has $12$ chromosomes at the end of mitosis. How many chromosomes would it have in the $G_{2}$-phase of its next cell cycle?

During which phase of the cell cycle does the $DNA$ content of the cell double?

In mitosis,the duplication of chromosomes occurs during

Which phase of interphase is the most important point in regulation of the cell cycle,during which it must decide whether the cell will start a new cycle or will enter in $G_0$ phase?