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Prophase Metaphase Telophase Anaphase Overview Click for video!! AdvanceAdvance to picture slide?

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Presentation on theme: "Prophase Metaphase Telophase Anaphase Overview Click for video!! AdvanceAdvance to picture slide?"— Presentation transcript:

1 Prophase Metaphase Telophase Anaphase Overview Click for video!! AdvanceAdvance to picture slide?

2 The process of mitosis is divided into 6 stages. The Interphase, Prophase, Metaphase, Anaphase, Telophase, and cytokinasis. At Interphase, there is only one cell, but after cytokinasis there are two identical cells. Before mitosis can take place, the cell need to store enough energy to drive the chemical processes during the cell division. During this period of time, there is intense cellular activity. The cell grows in size. The length of the grow phase varies between a few hours to a few months. The cell has stored enough energy, it is ready to divide itself. Sequence of Stages: 1. Grow phrase 2. Interphase 3. Prophase 4. Metaphase 5. Anaphase 6. Telophase 7. Cytokinasis

3 The DNA molecules progressively shorten and condense by coiling, to form chromosomes (making visible in light microscopes). The nuclear membrane and nucleolus are no longer visible.nucleolus The spindle apparatus has migrate to opposite poles(ends) of the cell and fibers extend from the centromeres.

4 The spindle fibers attach themselves to the centromeres of the chromosomes and align the chromosomes at the equatorial plate.centromeres Spindle fibers align the chromosomes along the middle of the cell nucleus. This line is referred to as the metaphase plate. This organization helps to ensure that in the next phase, when the chromosomes are separated, each new nucleus will receive one copy of each chromosome.

5 The spindle fibers shorten and the centromere splits, separated sister chromatids are pulled along behind the centromeres. sister chromatids centromeres

6 The chromosomes reach the poles of their respective spindles (new membranes form around the daughter nuclei). Nuclear envelope reform before the chromosomes uncoil. The spindle fibers disintegrate and chromosomes disperse and are no longer visible under a light microscope.

7 Prophase: 1st stage of mitosis Plant Animal Metaphase: 2 nd stage of mitosis Plant Animal Anaphase: 3 rd stage of mitosis Plant Animal Telophase: 4 th stage of mitosis Plant Animal Click for video!!

8 http://www.cellsalive.com/mitosis.htm http://library.thinkquest.org/C0118084/Gene/Chromosomal_In heritance/StagesMitosis.htm http://library.thinkquest.org/C0118084/Gene/Chromosomal_In heritance/StagesMitosis.htm http://www.biology.arizona.edu/cell_bio/tutorials/cell_cycle/c ells3.html http://www.biology.arizona.edu/cell_bio/tutorials/cell_cycle/c ells3.html http://library.thinkquest.org/C004535/interphase_.html http://www.cellsalive.com/cell_cycle.htm


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