mitosis

• Mitosis is a type of cell division that divides a cell into two identical daughter cells; happens in somatic cells or body cells
• Prophase

  1. chromatids coil
  2. nuclear membrane disappears
  3. spindle fibers form
  4. centrioles migrate at opposite poles
• Metaphase

  1. chromosomes move and align at the metaphase plate
  2. spindle fibers connect to kinetochores
• parts of a chromosome

  A) centromere

  B) kinetochore

  C) sister chromatids

  
• Anaphase

  1. proteins of each sister chromatid go away
  2. separated sister chromatids move away
• Telophase

  1. chromatids are at opposite poles
  2. nuclear membrane forms around chromatids
  3. spindle fibers dissolve
  4. daughter cells have one sister chromatid
  5. chromosomes decondense
• Cytokinesis- division of cytoplasm

  • cleavage furrow formation
  • outer to inner
  • happens when there's no cell wall
  • cell plate formation
  • inner to out
  • with cell walls only
• identify stages

  A) prophase

  B) metaphase

  C) anaphase

  D) telophase

  E) cytokinesis

  
• interphase: prepares cell for mitosis

  • Gap 1
  • makes cell larger
  • organelle: copied
  • synthesis
  • the cell synthesizes the DNA in the nucleus
  • Gap 2
  • same as gap 1
  • reorganize contents for mitosis

  A) Gap 1

  B) synthesis

  C) Gap 2

  D) mitotic phase

  
• At the end of Mitosis, each daughter cell has 46 chromosomes