Mitosis & Meiosis

• Asexual


  Is Mitosis Asexual or Sexual?
• Sexual


  Is Meiosis Asexual or sexual?
• 1


  How many divisions does Mitosis have?
• 2


  How many divisions does Meiosis have?
• 2


  How many daughter cells does Mitosis produce?
• 4


  How many daughter cells does Meiosis produce?
• Mitosis


  Which has daughter cells that are identical to the parent cell?
• Meiosis


  ______ enables organisms to reproduce sexually
• Mitosis


  ______ could be used for human growth.
• Mitosis


  ___ could be used to replenish depleted organs and tissues.
• Meiosis


  ______ is reserved for the creation of sperm and egg cells.
• Anaphase (IDing picture/no definition)


  Which stage of mitosis does this image represent?

  
• Metaphase (IDing picture/no definition)


  Which stage of mitosis does this image represent?

  
• Prophase (IDing picture/no definition)


  Which stage of mitosis does this image represent?

  
• Telophase (IDing picture/no definition)


  Which stage of mitosis does this image represent?

  
• Interphase


  Time period between cell divisions when the cell grows, DNA duplicates and preparation for mitosis occurs.
• Mitosis


  cell division in which the nucleus divides into nuclei containing the same number of chromosomes
• Cytokinesis


  Division of the cytoplasm and organelles
• Plant Cell Cytokinesis


  Which type of cytokinesis?

  Plant or Animal

  
• Animal Cell Cytokinesis


  Which type of cytokinesis?

  Plant or Animal

  
• Prophase (image and definition)

  Nuclear membrane disappears / Chromatin condenses and thickens into chromosomes / Spindle fibers appear

  
• Anaphase (image and definition)


  The spindle fibers pull the chromatids apart and pull them to opposite poles. This gives rise to daughter chromosomes

  
• Telophase (image and definition)


  Nuclear membrane forms around each set of chromosomes / Spindle fibers disappear / Chromosomes return to there original, uncondensed chromatin form

  
• Two Daughter Cells


  End result of mitosis
• Metaphase (image and definition)


  Chromosomes line up along the equator in the middle of the cell

  
• Cancer


  disorder in which some of the body's cells lose the ability to control growth
• Stages of Interphase


  G1, S, G2
• cell cycle checkpoints


  mechanisms that monitor the preparedness of a eukaryotic cell to advance through the various cell cycle stages
• G1 checkpoint


  checks for cell size, nutrients, growth factors and DNA damage
• G2 checkpoint


  checks for cell size and DNA replication
• M checkpoint


  Spindle assembly checkpoint. Mitosis will not continue if chromosomes are not properly aligned.
• Centrioles


  Cell organelle that aids in cell division in animal cells only
• spindle fibers


  help pull apart the cell during replication and are made up of micrtubules
• Meiosis


  a type of cell division that results in four daughter cells each with half the number of chromosomes of the parent cell, as in the production of gametes and plant spores.
• Meiosis I


  The first division of a two-stage process of cell division in sexually reproducing organisms that results in cells with half the number of chromosome sets as the original cell.
• Meiosis II


  the second phase of meiosis consisting of chromatids separating, along with the two diploid cells splitting in two
• Prophase I (Meiosis)


  homologous chromosomes pair up and form tetrads, crossing over occurs

  
• tetrad


  structure containing 4 chromatids that forms during meiosis

  
• crossing over


  Process in which homologous chromosomes exchange portions of their chromatids during meiosis; occurs during prophase I, increases genetic variation

  
• Metaphase I (Meiosis)


  Tetrads are lined up at the metaphase plate; Spindle fibers attach