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Mitosis

Mitosis. What are Chromosomes?. Chromosomes C arry the genetic information (traits ) that are passed on from one generation of cells to the next. Chromatids A chromatid is one half of a chromosome Each pair of chromatids is attached at an area called the centromere . Centromere.

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Mitosis

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  1. Mitosis

  2. What are Chromosomes? • Chromosomes • Carry the genetic information (traits) that are passed on from one generation of cells to the next. • Chromatids • A chromatid is one half of a chromosome • Each pair of chromatids is attached at an area called the centromere. Centromere Sister Chromatids

  3. Prophase Plant Significant Events • Nuclear Envelope breaks down • Nucleolus disappears • Chromosomes become visible *Centrioles move to the poles of the cell (Animals Only) Nuclear Envelope Animal

  4. Metaphase Plant Significant Events • Chromosomes line up across the center of the cell (metaphase plate) • Spindle fibers (apparatus) connect to each chromosome at the centromere Spindle Animal

  5. Anaphase Plant Significant Events • Chromosomes are separated and pulled to opposite sides of the cell by the spindle fibers • This phase ends when the chromosomes stop moving Animal

  6. Telophase Plant Significant Events • Chromosomes uncoil • Two new nuclear envelopes form Mitosis is complete, cell division is not. CYTOKINESIS • Division of the cytoplasm • Occurs at the same time as telophase • Plants: Cell plate forms • Animals: Cleavage furrow forms Animal

  7. Cytokinesis Animal Plant VS. The cell membrane pinches in to form a cleavage furrow A cell plate forms midway between the divided nuclei.

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