Mini Wiki 7 – The Cell Cycle

Mini Wiki

Hello and welcome back to the mini wiki series on ThatBiologist! It has been a while since I last posted one of these but this series is currently focusing on cell biology. If you want to catch up on what I’ve been writing about feel free to go check out the rest here. Today we are looking at the cell cycle. This ones a relatively short one but if you really only want to know the highlights you can always cut to the 5 most important things about the cell cycle at the bottom.


What is the cell cycle?

The cell cycle is a process of events that all eukaryotic cells do to divide and produce two daughter cells.

What are the stages of the cell cycle?

You can look at the cell cycle as having three distinct phases. Interphase, Mitosis and Cytokinesis. We will cover mitosis and cytokinesis next time for this mini wiki we’re focusing on the phases within interphase.

What are the stages of interphase in the cell cycle?

There are three phases within interphase. Looking at the cell through the microscope this looks like the stage when the cell is “resting” however there is actually alot going on.

G1 Phase –  This is when metabolic changes happen to prepare the cell for division. At a certain point the cell is forced to replicate and this is when the S phase begins.

S Phase – This is when the cells chromosomes are replicated and each chromosome now has two sister chromatids.

G2 Phase – This is when the metabolic changes to the cell are put in place for mitosis to begin. The replication of the genetic material is also checked.

5 Things to know about the cell cycle.

  1. The cell cycle is the process where the cell splits and produces two daughter cells that are exactly the same
  2. The cell cycle consists of the G1 phase, S phase, G2 phase and M phase (mitosis and cytokinesis)
  3. G1 phase is where the cell has metabolic changes to prepare for its division
  4. S phase is when the genetic material is duplicated
  5. G2 phase is when the cell checks the duplication process and prepares for mitosis. Thats the next wiki!


University of Leicester. (Unknown). The cell cycle, mitosis and meiosis. Available: Last accessed 1st November 2016

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