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Making New Cells: Mitosis PowerPoint Presentation
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Making New Cells: Mitosis

Making New Cells: Mitosis

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Making New Cells: Mitosis

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  1. Making New Cells: Mitosis

  2. Body Cells • Mitosis: process used to make new body cells • Body cells are cells found in the human body • Ex: Heart, lungs, skin, muscle, etc. • Human body has 46 chromosomes in each body cell

  3. Mitosis within the cell cycle • Cell cycle: • Interphase • Mitosis • Cytokinesis • Phases of mitosis • Prophase • Metaphase • Anaphase • Telophase

  4. Mitosis: Prophase • Chromatin in the nucleus condenses to form the chromosomes • Two pair of centrioles move to opposite sides of the nucleus • Nuclear envelope breaks down Centrioles Chromatin to chromosomes

  5. Mitosis: Metaphase Chromosomes Centrioles • Chromosomes line up across the center of the cell • Each chromosome attaches to a spindle fiber at the centromere • Hint: remember metaphase starts with an “M” and so does “middle” Centomere Spindle fiber

  6. New chromosomes Mitosis: Anaphase • Centomeres split • Chromatids separate • Each chromatid becomes a new chromosome • Chromosomes move to opposite ends of cell • Hint: anaphase starts with an “A” and so does “apart” Chromatids separate

  7. Nuclear envelope Mitosis: Telophase • Chromosomes begin to stretch out • New nuclear envelope forms around each region of chromosomes Stretching chromosomes

  8. New cells Process of Mitosis • Eventually two new cells are formed • Then cytokinesis begins