CELL DIVISION

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Presentation Transcript

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Cell Division TOPICS Mitosis Meiosis Comparison Binary fission Cell Division Functions in Reproduction, Growth, and Repair Cell division involves the distribution of identical genetic material, DNA, to two daughters cells. What is most remarkable is the fidelity with which the DNA is passed along, without dilution or error, from one generation to the next. Cells DISCLAIMER: Copyright of some of the figures used from internet and different web sites is duly acknowledged. The copyright stands with its original developer. The information has been gathered here for educational purpose and not for any kind of commercial purpose.

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Cell Division SUBTOPICS Interphase-mitosis Mitosis (4 stages)-stained chr. Mitosis slides MITOSIS

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SUBTOPICS Start of Meiosis Interphase-M1-M2 M1 Reduces Chr. No. M2 Resembles Mitosis Meiosis-complete Meiosis Slides Meiosis Diagramme+slides Gametes Comparison of: Meiosis 1 and Mitosis MEIOSIS Cell Division

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SUBTOPICS Mitosis- general view COMPARISON Cell Division

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SUBTOPICS Mitosis- general view Binary Fission

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MITOSIS Cell Division

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INTERPHASE MITOSIS

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A single division of a cell, which results in two daughter cells that are genetically identical to one another and to their mother cell. Regardless of their chromosome number, all kinds of eukaryotic cells can undergo mitosis. Mitosis PROPHASE METAPHASE ANAPHASE TELOPHASE

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MITOSIS Interphase Prophase Metaphase Anaphase Telophase Dyad

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After mitosis, a cell goes into G1 (growth 1 phase) during which it increases in size. Most cells in your body are not dividing and remain in a phase called Go. Dividing Cells leave Go or G1 and enter the S (synthesis) phase when they replicate their DNA and histones and each chromosome forms chromatids. After the S phase they enter G2 (growth 2 phase) in which they assemble the spindle proteins, etc. in preparation for mitosis or meiosis.

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MEIOSIS Cell Division

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Interphase Meiosis

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MEIOSIS Prophase 1 Metaphase 1 Anaphase 1 Telophase 1 Prophase 2 Metaphase 2 Anaphase 2 Telophase 2 Tetrad Meiosis I MeiosisII

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Meiosis 1

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Meiosis 1 & 2

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Meiosis 2

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Meiosis 2

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Meiosis 2 Gametes

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Comparison Lining up of chromosomes during Metaphase and Anaphase Meiosis 1 Mitosis

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The Plant Cell EUKARYOTE Cell Division

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The Plant Cell Details of cell organelle

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Details of cell organelle

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The Bacterial Cell PROKARYOTE

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Common Features of All Cells

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Details of cell organelle

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Research Goes On