The Cell Cycle
Mady White and Ciara Page
Interphase
- The first step of the cell cycle is Interphase.
- Cells spend 90% of the cell cycle in this phase.
- Interphase has three stages: G1 (cell growth), S (Synthesis; DNA transcribes itself), and G2 (Growth Phase; preparation for Mitosis)
Prophase
- This is the first step of Mitosis (process by which two daughter cells are made).
- In prophase, the nucleus and nuclear membrane will begin to disappear inside the cell, and the centrioles begin to move opposite sides of the cell.
Metaphase
- The second step in Mitosis is Metaphase.
- In Metaphase, the chromosomes arrange themselves in the center of the cell.
- The centrioles and spindle fibers connected to the chromosomes in the center.
Anaphase
- The third step in Mitosis is Anaphase.
- In Anaphase, the sister chromotids will repel from each other to opposite ends of the cell.
Telophase
- The last step in Mitosis is Telophase.
- In Telophase, two nuclei form and begin to separate into two cells.
- The Chromatin coils DNA in a super tight bond.
Cytokinesis
- The final step in the cell cycle is Cytokinesis.
- In Cytokinesis, the cytoplasm divides into two, forming to new cells.
The following is a video explaining the whole cell cycle.
Cell Division and the Cell Cycle