i can place in order pictures that show chromosome movement during cell division. i can classify…
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How do little elephants grow up to be BIG elephants?TRANSCRIPT
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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