Mitosis and Meiosis

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Last updated 8:44 PM on 10/4/26
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7 Terms

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<p>Mitosis </p>

Mitosis

  • Interphase preps for mitosis

  1. Prophase

  2. Metaphase

  3. Anaphase

  4. Telophase


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Interphase: prior to mitosis

  • G1

    • cell growing/maturing

  • S

    • DNA duplicated→ 46 chromosomes, 92 chromatids

  • G2

    • cells preps for division; duplicating centrosome and needed proteins


<ul><li><p>G1</p><ul><li><p>cell growing/maturing</p></li></ul></li><li><p>S</p><ul><li><p>DNA duplicated→ 46 chromosomes, 92 chromatids</p></li></ul></li><li><p>G2</p><ul><li><p>cells preps for division; duplicating centrosome and needed proteins</p></li></ul></li></ul><p></p>
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  1. Prophase (dark worms)


DNA condenses to form chromosomes

  • envelope breaks

  • spindle fibers form


<p>DNA condenses to form chromosomes</p><ul><li><p>envelope breaks</p></li><li><p>spindle fibers form</p></li></ul><p></p>
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  1. Metaphase


DNA lines up in the middle

<p>DNA lines up in the middle</p>
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  1. Anaphase


separation of middle

  • centromeres split and sister chromatids move to opposide sides


<p>separation of middle</p><ul><li><p>centromeres split and sister chromatids move to opposide sides</p></li></ul><p></p>
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  1. Telophase/Cytokinesis


  • spindle dissolves

  • regain former chromatin(interphase) appearance but now double

  • nuclear envelope reforms


<ul><li><p>spindle dissolves</p></li><li><p>regain former chromatin(interphase) appearance but now double</p></li><li><p>nuclear envelope reforms</p></li></ul><p></p>
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Meiosis

egg and sperm are not identical to each other or the parent cell

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