Mitosis

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Mitosis
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Duration

• Mitosis in a standard cell takes about an hour.
• A standard cell divides roughly every 22 hours.

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During non-mitosis

• When a cell is not performing mitosis, it is
  growing and preparing for the next mitotic
  division.
• This time frame is referred to as interphase
  and is split into 3 parts.
• G1 1st growth phase aka Gap 1
• S1 Synthesis phase
• G2 2nd growth phase aka Gap 2

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Division and multiplication

• During cell division, organelles and DNA multiply
  so that each daughter cell will have enough
  organelles.
• Chromatin are unwound strands of DNA contained in
  the nucleus. DNA stays in this form during
  interphase
• Chromatids are tightly wound strands of DNA that
  coil into long cylinder shapes
• Chromosomes result from pairs of sister
  chromatids (a chromatid that replicates into 2)
  linking together at a point called a centromere.

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Whats that look like?
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Mitosis

• Mitosis is the process during which a cells
  nucleus divides into two identical nuclei.
• Following mitosis in most cells is cytokinesis.
• Cytocell
• Kinesismovement
• Movement of cells cytoplasm into two daughter
  cells.

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Stages of Mitosis

• Mitosis is continuous but scientists have divided
  it into steps based on location of DNA.
• Prophase
• Metaphase
• Anaphase
• Telophase

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Prophase

• Prophase Chromatids form and pair up
• Nuclear envelope dissolves, centrioles appear

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Metaphase

• Metaphase Chromosomes align in middle

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Anaphase

• Anaphase Sister chromatids are pulled to
  opposite ends.

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Telophase

• Telophase Nuclear envelopes reform. Chromosomes
  unwind.

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Cytokinesis

• Cytokinesis After mitosis, cells finish dividing
  by seperating their cytoplasm.

Cytokinesis Video