Download - Mitosis plant & animal
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Asexual ReproductionMitosis
Mitosis is the process in which the nucleus divides to form two new nuclei. How does mitosis differ in plants and animals?
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How do little elephants grow up to be BIG elephants?
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The process of asexual reproduction begins
after a sperm fertilizes an egg.
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Skin cancer - the abnormal growth of skin cells - most often develops on skin exposed to the sun.
Cell that reproduce by asexual reproduction reproduce constantly.
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Mitosis Cycle
• Interphase
• Prophase
• Metaphase
• Anaphase
• Telophase & Cytokinesis
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• 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
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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 (or poles) appear and begin to
move to opposite end of the cell. • Spindle fibers form between the poles.
CentriolesSister chromatids
Spindle fibers
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Animal Cell Plant Cell
Spindle fibers
Centrioles
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• Chromosomes (or pair of chromatids) attach to the spindle fibers.
Centrioles
Spindle fibers
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Animal Cell Plant Cell
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• Chromosomes (or pair of chromatids) separate and begin to move to opposite ends of the cell.
Centrioles
Spindle fibers
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Animal Cell Plant Cell
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• Two new nuclei form. • Chromosomes appear as chromatin
(threads rather than rods).• Mitosis ends.
NucleiNuclei
Chromatin
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Animal Cell Plant Cell
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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 -- ReviewInterphase
Prophase
Metaphase
Anaphase
Telophase
Interphase
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Plant Mitosis -- ReviewInterphase
Prophase
Metaphase
Anaphase
Telophase
Interphase
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