How do baby elephants grow up to be adult elephants? What is happening to their cells?
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Transcript of How do baby elephants grow up to be adult elephants? What is happening to their cells?
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How do baby elephants grow up to be adult elephants? What is
happening to their cells?
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Mitosis
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MitosisCell Division: One cell divides into 2
identical (daughter) cells.
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Phases of Mitosishttp://www.cellsalive.com/mitosis.htm
• Interphase
• Prophase
• Metaphase
• Anaphase
• Telophase & Cytokinesis
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The Cell
Cycle
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• Chromosomes (DNA) are copied (# doubles)
CELL MEMBRANE
Nucleus
Cytoplasm
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Animal Cell Plant Cell
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
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• Mitosis begins (cell begins to divide)
Centrioles
Sister chromatids(pairs of identical chromosomes)
Spindle fibers
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Animal Cell Plant Cell
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
Spindle fibers
Centrioles
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• Chromatids (or pairs of chromosomes) attach to the spindle fibers.
Centrioles
Spindle fibers
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Animal Cell Plant Cell
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
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• Chromatids (or pairs of chromosomes) separate and begin to move to opposite ends of the cell.
Centrioles
Spindle fibers
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Animal Cell Plant Cell
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
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• Two new nuclei form. • Mitosis ends.
NucleusNucleus
Chromatin
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Animal Cell Plant Cell
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
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• Cell membrane moves inward to create two daughter cells – each with its own nucleus with identical chromosomes.
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Animal Mitosis -- Review
Interphase
Prophase
Metaphase
Anaphase
Telophase
Interphase
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Plant Mitosis -- ReviewInterphase
Prophase
Metaphase
Anaphase
Telophase
Interphase
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- Cell Division
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http://www.cellsalive.com/mitosis.htm