how do baby elephants grow up to be adult elephants? what is happening to their cells?
TRANSCRIPT
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.
Phases of Mitosishttp://www.cellsalive.com/mitosis.htm
• Interphase
• Prophase
• Metaphase
• Anaphase
• Telophase & Cytokinesis
The Cell
Cycle
• Chromosomes (DNA) are copied (# doubles)
CELL MEMBRANE
Nucleus
Cytoplasm
Animal Cell Plant Cell
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
• Mitosis begins (cell begins to divide)
Centrioles
Sister chromatids(pairs of identical chromosomes)
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.
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. • Mitosis ends.
NucleusNucleus
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.
Animal Mitosis -- Review
Interphase
Prophase
Metaphase
Anaphase
Telophase
Interphase
Plant Mitosis -- ReviewInterphase
Prophase
Metaphase
Anaphase
Telophase
Interphase
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- Cell Division
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http://www.cellsalive.com/mitosis.htm