Mitotic spindle apparatus in green from the virtual

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Mitotic spindle apparatus in green. From the Virtual Cell Biology Classroom on ScienceProfOnline.com Image: Fluoresced cell , National Institutes of Health Prophase
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chromatin nucleolus nucleus centrioles condensing chromosomes kinetocore Prophase Q: What is a kinetocore?
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chromosomes align along equator of the cell, with one kinetochore facing each pole centrioles spindle fibers chromosomes __________________ Images: Metaphase drawing , Henry Gray's Anatomy of the Human Body; Metaphase Onion Cell Drawing & Photo, Source Unknown Kinetocores not pictured in this illustration.
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_________ sister chromatids separate • spindle fibers attached to kinetochores shorten and pull chromatids towards the poles. • free spindle fibers lengthen and push poles of cell apart Images: Anaphase drawing , Henry Gray's Anatomy of the Human Body; Anaphase Onion Cell Drawing & Photo, Source Unknown From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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___________ • spindle fibers disintegrate • nuclear envelopes form around both groups of chromosomes •chromosomes revert to their extended state • cytokinesis occurs, enclosing each daughter nucleus into a separate cell Images: Telophase drawing , Henry Gray's Anatomy of the Human Body; Telophase Onion Cell Drawing & Photo, Source Unknown From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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chromosomes decondensing nuclear envelope reforming nucleolus reappears pinching of cell membrane at equator Early Telophase Nucleolus = Small, round site within nucleus, composed of protein & RNA. Involved in ribosomal RNA synthesis & formation of ribosomes.
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cytokinesis Late Telophase
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__________ – Plant vs. Animal Cell Plant cells undergo cytokinesis by forming a cell plate between the two daughter nuclei. Animal cells undergo cytokinesis through the formation of a cleavage furrow. A ring of microtubules contract, pinching the cell in half. From the Virtual Cell Biology Classroom on ScienceProfOnline.com Images: Telophase drawing , Henry Gray's Anatomy of the Human Body; Ciliate dividing , TheAlphaWolf; Telophase Onion Cell Photo, Source Unknown
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Lets play… “Guess That Phase!” From the Virtual Cell Biology Classroom on ScienceProfOnline.com Image: Onion Cells Photo, Source Unknown
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Stages of Mitosis Image: Onion Cell Drawing & Photo, Source Unknown
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Phases and Sub-phases of Cell Division 1. Interphase 2. Mitosis a. G1 b. S c. G2 a. Nuclear division b. Cytokinesis 1. Prophase 2. Metaphase 3. Anaphase 4. Telophase From the Virtual Cell Biology Classroom on ScienceProfOnline.com
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Drawing and Labeling Chromosomes Sister Chromatid Replicated Uncondensed Chromosome (chromatin) Sister Chromatid Centromere Unreplicated Uncondensed Chromosome
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