No it is not the stage of mitosis but its a part of cell cycle which is a sequence of events by which cell replicates its genome ,synthesises the constituents of the cell and eventually divides into two daughter cells.now therra re two phases in a cell cycle. Interphase-in this phase basically cell prepares itself to ungergo division. read more
Before a dividing cell enters mitosis, it undergoes a period of growth called interphase. Some 90 percent of a cell's time in the normal cellular cycle may be spent in interphase. G1 phase: The period prior to the synthesis of DNA. read more