07 Mitosis
Upcoming SlideShare
Loading in...5
×
 

07 Mitosis

on

  • 2,631 views

 

Statistics

Views

Total Views
2,631
Views on SlideShare
1,129
Embed Views
1,502

Actions

Likes
0
Downloads
33
Comments
0

3 Embeds 1,502

http://mrjvcebiology1-2.blogspot.com.au 987
http://mrjvcebiology1-2.blogspot.com 425
http://www.mrjvcebiology1-2.blogspot.com.au 90

Accessibility

Categories

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

07 Mitosis 07 Mitosis Presentation Transcript

  • MITOSIS
  • Mitosis The process of cell division which results in the production of two daughter cells from a single parent cell. The daughter cells are identical to one another and to the original parent cell.
  • Mitosis can be divided into stages
    • Interphase
    • Prophase
    • Metaphase
    • Anaphase
    • Telophase & Cytokinesis
  • Interphase The cell prepares for division
    • Animal & Plant Cells
      • Nucleus clearly defined
      • Chromosomes not yet visible
      • DNA replicated
      • Organelles replicated
      • Cell increases in size
    2N - 4N
  • Interphase Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
  • Prophase The cell prepares for nuclear division
    • Animal & Plant Cells
      • DNA packaged in to chromosomes
      • Nuclear envelope disappears
      • Centrioles move to opposite sides of the cell
    4N
  • Prophase Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
  • Metaphase The cell prepares chromosomes for division
    • Animal & Plant Cells
      • Chromosomes line up at the center of the cell
      • Spindle fibres attach to centromeres on the chromosomes
      • Centrioles reach the opposite poles of the cell
    4N
  • Metaphase Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
  • Anaphase The chromosomes divide
    • Animal & Plant Cells
      • Spindle fibers contract and pull chromosomes apart
      • ½ of each chromosome (called a chromatid) moves to each hemisphere
      • Unattached spindle fibres push against each other or the sides of the cell, and it begins to elongate
    4N
  • Anaphase Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
  • Telophase The cytoplasm divides
    • Animal Cell
      • DNA spreads out
      • 2 nuclei form
      • Contractile ring causes a cleavage furrow to form the 2 new daughter cells
    • Plant Cell
      • DNA spreads out
      • 2 nuclei form
      • Cell plate forms new cell wall between the nuclei to form the 2 new daughter cells
    4N - 2N
  • Telophase Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
  • Mitosis Animations Mitosis.exe Mitosis Animation
  • Animal Mitosis -- Review Interphase                                                               Telophase                                                               Anaphase                                                               Metaphase                                                               Prophase                                                               Interphase                                                              
  • Plant Mitosis -- Review Interphase                                                               Telophase                                                               Anaphase                                                               Metaphase                                                               Prophase                                                               Interphase                                                              
  • Summary of Mitosis
    • Prophase:
        • Chromosomes condense
        • Nuclear envelope disappears
        • centrosomes move to opposite sides of the cell
        • Spindle forms and attaches to centromeres on the chromosomes
    • Metaphase
        • Chromosomes lined up on equator of spindle
        • centrosomes at opposite ends of cell
    • Anaphase
        • Centromeres divide: each 2-chromatid chromosome becomes two 1-chromatid chromosomes
        • Chromosomes pulled to opposite poles by the spindle
    • Telophase
        • Chromosomes de-condense
        • Nuclear envelope reappears
        • Cytokinesis: the cytoplasm is divided into 2 cells