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Cell Reproduction “Mitosis”

Cell Reproduction “Mitosis”. Somatic (Body) Cell Life Cycle (everything but eggs and sperm). INTERPHASE ( Everything ‘in between’ mitotic cell divisions.) G1: Newly formed cell grows up and does its job. S Phase: Cell starts copying its DNA

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Cell Reproduction “Mitosis”

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  1. Cell Reproduction“Mitosis”

  2. Somatic (Body) Cell Life Cycle(everything but eggs and sperm) • INTERPHASE (Everything ‘in between’ mitotic cell divisions.) • G1: Newly formed cell grows up and does its job. • S Phase: Cell starts copying its DNA • G2: The cell continues to do its regular job, but more slowly and important organelles are duplicated. • MITOSIS • Cell divides into two identical daughter cells. • Prophase, Metaphase, Anaphase and Telophase

  3. MITOSIS • Asexual reproduction of cells. • Also called cloning and vegetative propagation. • Results in two, identical daughter cells. • Necessary for: • Maintenance • Growth • Reproduction in asexual species

  4. PMAT 4N Cell • PROPHASE • Condensed chromosomes • Bye bye nuclear envelope • Centrioles hook spindle fibers to chromosomes

  5. PMAT 4N Cell • METAPHASE • Chromosomes line up at the plate. Sister Chromatids Homologous Chromosomes

  6. 4N Cell PMAT • ANAPHASE • Spindle fibers pull sister chromatids apart toward centrosomes.

  7. PMAT 2, 2N Cells • TELOPHASE • Hello nuclear envelope! • Good bye spindle fibers! • Chromosomes decondense (is this a word?) • Cell plate forms in plants/ cell membrane pinches off in animals.

  8. Cytokinesis • PLANTS: • Cell wall forms between new cells • ANIMALS: • New plasma, or cell membrane forms around new cells.

  9. Mitosis Animation

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