Cell Cycle

In the general cell cycle there are four phases: the G1, S, G2 and M phase. The drawing below shows the cycle.

The G1 phase is also known as the growth phase, which is where the cells copy organelles and increase in size. Next, the S phase also known as the DNA synthesis phase, where the cell copies DNA. The G2 phase is the second growth phase, where the cell will continue to copy the organelles and increase in size. Lastly the M phase, where the cell will actually divide.