Mitosis

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Mitosis Meiosis

• Division of the nucleus.

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Mitosis division of 1 diploid nucleus into 2
identical diploid nuclei

• Diploid cell (2n). cells with 2 of every
  chromosome.
• Daughter Cell 2 new cells produced by mitosis.
• All somatic cells undergo mitosis for growth,
  repair or replacement of old cells

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Meiosis division of 1 diploid nuclei into 4
haploid nuclei.

• Haploid (1n) cells with only 1 of each
  chromosome.
• Gamete egg or sperm.
• Only sex cells undergo meiosis to produce gametes.

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Interphase normal phase of the cell.

• In interphase, the nuclear envelope is present
  and the chromosomes are NOT visible.

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Prophase 1st phase of mitosis or meiosis.

• During prophase, the chromosomes are now visible
  (prominent) and the nuclear membrane is breaking
  apart.

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Metaphase 2nd phase

• The nuclear membrane is now gone and the
  chromosomes line up (meet) in the middle.

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Anaphase 3rd phase

• The nuclear envelope is still absent and the
  chromatids move away from each other.

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Telophase 4th phase

• Two new nuclear envelopes begin to reform and
  chromosomes begin to disappear.
• Cytokinesis division of the cell membrane and
  cytoplasm.

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Mitosis - Overview
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Meiosis Has the same phases as mitosis (PMAT)
it just does them 2 times!!!!