Females have 1 inactive X chromosome composed completely of heterochromatin. Even though it is not condensed, interphase chromatin is specifically organized in the nucleus. The cell cycle is the cycle of duplication of cellular components followed by cell division. The details of this cycle vary from organism to organism but certain characteristics are universal. The genetic information of a cell must be copied and passed on to daughter cells.
Cells generally double their mass during each cell cycle.
While cell division is simple in procaryotes, it is more complicated in eucaryotes. In eucaryotes, components of the nucleus and cytoplasm must be equally partitioned between two cells. Cell division can be divided into two parts, both of which constitute M phase. The rest of the cell cycle is called interphase, this can be divided into S phase, G1 phase, and G2 phase. G phase fills the gaps between the two phases of replication and division.