![]() ![]() G 2: DNA has been replicated cell is preparing for mitosis. S: DNA replication (S = synthesis new copies of DNA are synthesized. What you can't see are the phases of interphase: G 1: Period of cell growth before (G = gap) ribosomes and organelles are being duplicated. The nucleus of the cell is clearly stained and appears to have tiny dots and one or more dark nucleoli inside. Farther up the root is the elongation zone, where cells are long rectangles these cells are not undergoing mitosis. This is the root meristem (embryonic tissue) where mitosis is occurring. PLANT CELL DIVISIONroot meristem of Allium cepa, the garden onionĮxamine the square cells just inside the root cap. Animal cells take a variety of different shapes at the end of mitosis, a neck forms to separate the two daughter cells. Note: Plant cells are often shaped like boxes because they are surrounded by a cell wall at the end of mitosis, the cell plate divides the two daughter cells. We see them shown in books as snapshots of a particular instant in the process you have to judge what was happening when the music stopped. Mitosis is a continuous process, and the phases blend into one another it can often be hard to tell if an image is in the late part of one phase or the early part of another. Mitosis, the actual process of dividing has four defined phases: Prophase, Metaphase, Anaphase, and Telophase then the daughter cells enter interphase. Most of the time a cell is in interphase, the growth and preparation stage of the cycle. The cell cycle refers to the continuing series of divisions alternating with cell growth: interphasemitosisinterphasemitosisinterphase. Cells multiply to make an organism bigger, to repair damage, or to multiply the number of organisms of that kind. A cell divides into two daughter cells tht are genetically identical to the original cell and to each other. Mitosis is the name for the kind of cell division that produces a greater number of cells = cell multiplication after division, the daughter cells are about half the size of their parent, and they grow before division occurs again. Wahlert & Mary Jean HollandĬELL CYCLE AND MITOSIS Nuclear and Cytoplasmic Division in the Eukarya Cell Cycle and Mitosis, Laboratory Notes for BIO 1003 Laboratory Notes for BIO 1003 © 30 August 1999, John H. ![]()
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