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Mitosis.

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Presentation on theme: "Mitosis."— Presentation transcript:

1 Mitosis

2 MITOSIS All of our BODY Cells (also called SOMATIC cells) go through mitosis. One parent cell becomes 2 daughter cells. The number of chromosomes does not change. Mitosis is important for growth and repair! 46 chromosomes 46 chromosomes

3 1st: PROPHASE 2nd: METAPHASE 3rd: ANAPHASE 4th: TELOPHASE
4 stages of Mitosis 1st: PROPHASE 2nd: METAPHASE 3rd: ANAPHASE 4th: TELOPHASE

4 The time frame for the cell cycle
Most of the cell cycle is spent in interphase The last phase is called the M phase This phase consists of mitosis and cytokinesis Mitosis is divided into four steps

5

6 Step one of mitosis is prophase
Centrioles produce spindle fibers that separate the sister chromosomes later on in mitosis Nucleolus disappears and nuclear envelope breaks down Chromosomes condense and become visible and form structures like this

7 Step 2 of mitosis is metaphase
The chromosomes line up across the center of the cell Spindle fibers are connected to each chromosome

8 Step 3 of mitosis is anaphase
Centromeres that join the sister chromatids splits Chromatids separate and are pulled to either side of the cell by the spindles

9 Step 4 of mitosis is telophase
Condensed chromosomes begin to disperse Spindle fibers break down Nuclear envelope begins to develop around each set of separated chromosomes


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