I can place in order pictures that show chromosome movement during cell division.

I can classify methods of reproduction as sexual or asexual.

How do little elephants grow up to be BIG elephants?

Single parent produces offspring that are identical to the parent

Organisms with eukaryotic cells reproduce by mitosis and cell division

1. Growth2. Repair3. Replacement

Budding – using mitosis and cell division to form a bud which will become a new organism

Regeneration – using mitosis and cell division to regrow body parts

Cell division occurs in a series of stages, or phases.

Cell Cyclehttp://www.cellsalive.com/mitosis.htm

• Interphase

• Prophase

• Metaphase

• Anaphase

• Telophase & Cytokinesis

• Chromosomes are copied (# doubles)• Chromosomes appear as threadlike coils

(chromatin) at the start, but each chromosome and its copy(sister chromosome) change to sister chromatids at end of this phase

CELL MEMBRANENucleus

Cytoplasm

Animal Cell Plant Cell

Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

• Mitosis begins (cell begins to divide)• Centrioles (or poles) appear and begin to

move to opposite end of the cell. • Spindle fibers form between the poles.

CentriolesSister chromatids

Spindle fibers

Animal Cell Plant Cell

Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

Spindle fibers

Centrioles

• Chromatids (or pairs of chromosomes) attach to the spindle fibers.

• Line up along the center of the cell

Centrioles

Spindle fibers

Animal Cell Plant Cell

Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

• Chromatids (or pairs of chromosomes) separate and begin to move to opposite ends of the cell.

Centrioles

Spindle fibers

Animal Cell Plant Cell

Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

• Two new nuclei form. • Chromosomes appear as chromatin

(threads rather than rods).• Mitosis ends.

NucleiNuclei

Chromatin

Animal Cell Plant Cell

Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

• Cell membrane moves inward to create two daughter cells – each with its own nucleus with identical chromosomes. Same # as original

• Plants form a cell plate to divide cytoplasm

Animal Mitosis -- ReviewInterphase

                                              

              

Prophase

                                             

               

Metaphase

                                              

              

Anaphase

                                             

               

Telophase

                                              

              

Interphase

                                             

               

Plant Mitosis -- ReviewInterphase

                                                        

    

Prophase

                                                       

     

Metaphase

                                                        

    

Anaphase

                                                       

     

Telophase

                                                        

    

Interphase

                                                       

     

IInterphasePProphaseMMetaphaseAAnaphaseTTelophaseCCytokinesis

IPMATIPMATCC

II PPrayray MMore ore AAtt TThe he CChurchhurch

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- Cell Division

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