Fig. 2.21 Cell life cycle leading to cell reproduction (a) Life cycle (b) Reproduction by mitosis. (Sources of images below. Used with permission.)







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Sources of image below. Used with permission.

Description English: By Richard Wheeler (Zephyris) 2006. Schematic representation of the cell cycle. Cytokinesis forms rapidly in the process of the cell cycle.

Date 25 January 2011, 01:43 (UTC)

         Source Cell_Cycle_2.svg

         derivative work: Histidine (talk)

This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: changed to better represent duration of cell cycle phases. The original can be viewed here: Cell Cycle 2.svg. Modifications made by Histidine.

Original figure:

Description English: The four phases of the cell cycle. G1 - the intitial growth phase. S - the phase in which DNA is synthesised. G2 - the second growth phase in preparation for cell division. M - mitosis; where the cell divides to produce two daughter cells that continue the cell cycle.

Date 14 August 2013, 13:25:17

Source Own work

Author Simon Caulton

Description English: A diagram of mitosis stages
Interphase (G₂): In this substage, the cell prepares for nuclear division and a protein that makes microtubles for cell division is synthesized.
Prophase: The longest stage of mitosis. In this stage the chromosomes become visible and the centrioles separate and move to opposite poles of the cell.
Prometaphase: The nuclear envelope disintegrates and microtubules can attach to kinetochores. Chromosomes congress toward the metaphase plate of the cell.
Metaphase: In this stage the chromosomes line up across the center of the cell and become connected to the spindle fiber at their centromere.
Anaphase: In this stage the sister chromatids separate into individual chromosomes and are pulled apart.
Telophase & cytokinesis: Chromosomes decondense and are surrounded by a newly formed nuclear envelope. Cytokinesis typically coincides with and telophase.

Date 26 June 2016

Source Own work; Used information from: Campbell Biology (10th Edition) by: Jane B. Reece & Steven A. Wasserman.


Author Ali Zifan