## Human Anatomy & Physiology (9th Edition)

The three subphases of interphase are called $G_{1}$, S, and $G_{2}$. In the $G_{1}$ subphase, the cell grows and begins to create centrioles needed for division. in the S subphase, the DNA of the cell is replicated in preparation for division. In the $G_{2}$ subphase, the cell again undergoes growth and stores energy needed for cell division.
Interphase is the first process in the cell cycle before the mitosis/meiosis and cytokineses phase. This first phase of cell division is highlighted by three subsections, called $G_{1}$, S, and $G_{2}$. The process in which cells prepare for cell division within interphase are described in the answer above.