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Cells divide during mitosis and cytokinesis .

Cells divide during mitosis and cytokinesis. DNA and histones. Supercoiled DNA. DNA double helix. Chromatin. Chromosomes condense at the start of mitosis. DNA wraps around proteins ( histones ) that condense it. chromatid. telomere. centromere. telomere.

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Cells divide during mitosis and cytokinesis .

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  1. Cells divide during mitosisandcytokinesis.

  2. DNA andhistones SupercoiledDNA DNA doublehelix Chromatin Chromosomes condense at the start of mitosis. • DNA wraps around proteins (histones) that condense it.

  3. chromatid telomere centromere telomere Condensed, duplicated chromosome • Chromatin- DNA plus proteins. • Chromatid- One half of a duplicated chromosome. • Centromere- Hold together Sister chromatids. • Telomeres- protect DNA and do not include genes.

  4. Parent cell centrioles spindle fibers centrosome nucleus with DNA Mitosis and Cytokinesisproduce two genetically identical daughter cells. Interphase • prepares the cell to divide • DNA is duplicated.

  5. Mitosis divides the cell’s nucleus in four phases. PMAT TELOPHASE PROPHASE METAPHASE ANAPHASE

  6. Prophase • Chromosomes condense, PAIR, and spindle fibers form.

  7. METAPHASE • Chromosomes line up in the MIDDLE of the cell.

  8. ANAPHASE • Sister chromatids are pulled AWAY to opposite sides of the cell.

  9. TELOPHASE • TWO new nuclei form and chromosomes begin to uncoil.

  10. In animal cells, the membrane pinches closed. • In plant cells, a cell plate forms. divides cytoplasm into two cells

  11. Mitosis Overview • Prophase- Chromosomes PAIR • Metaphase- Chromosomes line up in the MIDDLE • Anaphase- Sister chromatids are pulled AWAY • Telophase- TWO new nuclei are formed PMAT

  12. Prophase Metaphase Cytokinesis Anaphase Telophase

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