Overview of Mitosis
- Division of the nucleus
- Only occurs in eukaryotes
- Has four stages
- Doesn’t occur in some cells such as brain cells
Prophase
http://faculty.ccbcmd.edu/~gkaiser/biotutorials/dna/mitosis/pcprophaseA.html
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Metaphase
http://www.visualphotos.com/image/1x3744267/a_cell_in_metaphase_of_mitosis_a_whitefish_cell_in
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Anaphase
http://botit.botany.wisc.edu/Resources/Botany/Mitosis/Allium/Anaphase.jpg.html
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Telophase
http://faculty.ccbcmd.edu/~gkaiser/biotutorials/dna/mitosis/actelophase.html
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Cytokenisis
- Division of cell into two, identical halves called daughter cells
- Not part of mitosis
- Occurs post-mitosis
- Means division of the cytoplasm
- In plant cells, cell plate forms at the equator to divide cell
- In animal cells, cleavage furrow forms to split cell
Why Do Cells Divide?
- The larger a cell becomes, the more demands the cell places on it's DNA.
- It also has more trouble moving enough food and wastes across its cell membrane
- Try the following activity with your students to help them understand the reasons behind cell division
- Reference: Nelson Biology 11
Mitosis Animation
A quick animation to summarize the stages of mitosis