anyone know mitosis and meiosis?
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remember the phases in meiosis (in order) :Prophase, Metaphase, anaphase, telephase (pmat)\nMitosis\nI  INTRODUCTION \n\nMitosis, process in which a cell’s nucleus replicates and divides in preparation for division of the cell. Mitosis results in two cells that are genetically identical, a necessary condition for the normal functioning of virtually all cells. Mitosis is vital for growth; for repair and replacement of damaged or worn out cells; and for asexual reproduction, or reproduction without eggs and sperm.\n\nAll multicellular animals, plants, fungi, and protists, which begin life as single cells, carry out mitosis to develop into complex organisms containing billions of cells. Mitosis continues in full-grown organisms as a means of maintaining the organism—replacing dying skin cells, for example, or repairing damaged muscle cells. In the cells of the adult human body, mitosis occurs about 25 million times per second. Multicellular organisms such as sea stars, sea anemones, fungi, and certain plants rely on mitosis for asexual reproduction at particular stages in their life cycles, and mitosis is the sole mode of reproduction for many single-celled organisms.\n\nII  INTERPHASE \n\nThe life cycle of eukaryotic cells, or cells containing a nucleus, is a continuous process typically divided into three phases for ease of understanding: interphase, mitosis, and cytokinesis. Interphase includes three stages, referred to as G1, S and G2. In G1, a newly formed cell synthesizes materials needed for cell growth. In the S stage, deoxyribonucleic acid (DNA), the genetic material of the cell, is replicated. At this stage, DNA consists of long, thin strands called chromatin. As each strand is replicated, it is linked to its duplicate by a structure known as a centromere. When the S stage is complete, the cell enters a brief stage known as G2, when specialized enzymes correct any errors in the newly synthesized DNA, and proteins involved with the next phase, mitosis, are synthesized. \n\nIII  MITOSIS \n\nMitosis occurs in four steps. In prophase the replicated, linked DNA strands slowly wrap around proteins that in turn coil and condense into two short, thick, rodlike structures called chromatids, attached by the centromere. Two structures called centrioles, both located on one side of the nucleus, separate and move toward opposite poles of the cell. As the centrioles move apart, they begin to radiate thin, hollow, proteins called microtubules. The microtubules arrange themselves in the shape of a football, or spindle, that spans the cell, with the widest part at the center of the cell and the narrower ends at opposite poles. As the spindle forms, the nuclear membrane breaks down into tiny sacs or vesicles that are dispersed in the cytoplasm. Final disintegration of the membrane marks the beginning of metaphase. \n\nIn metaphase, the spindle fibers attach to the chromatids near the centromeres, and tug and push the chromatids so that they line up in the equatorial plane of the cell halfway between the poles. Like two individuals standing back to back at the equator, one chromatid faces one pole of the cell, and its linked partner faces the opposite pole. This precise orientation is necessary in order for the next step, anaphase, to occur. Anaphase begins when the centromeres split, separating the identical chromatids into single chromosomes, which then move along the spindle fibers to opposite poles of the cell. \n\nAs these two identical groups of single chromosomes gather at opposite poles of the cell, telophase begins. A new nuclear membrane forms around each new group of chromosomes. The spindle fibers break down and the newly formed chromosomes begin to unwind. If viewed under a light microscope, the chromosomes appear to fade away. They exist, however, in the form of chromatin, the extended, thin strands of DNA too fine to be seen except with electron microscopes. Mitosis accomplishes replication and division of the nucleus,
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Cytokinesis isn't truly mitosis or interphase, but a stage of it's own. It happens at the end of mitosis and is often included in explanations of mitosis.
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Meiosis:  \nprocess of cell division which occurs in the maturation of sex cells (Biology).\n\nMitosis:\nprocess of cell division resulting in two daughter cells which are identical to the original nucleus (Biology).
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meiosis - cell divides but chromosomes are not duplicated. the product is two haploid cells with slightly different DNA (due to crossing over of chromosomes when they line up in metaphase)\nmitosis - cell divides into two identical daughter cells. if the mother cell is diploid, the two daughter cells will be too
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Mitosis ends with a complete copy of the DNA from the original cell to the new cell.  Meiosis results in a cell with only half of the DNA from the original cell.  The process involves the complete doubling of the DNA from the cell and 2 divisions, so that the cells have only half the chromosomes they need.  This cell is either the egg or the sperm depending on the sex of the animal it is in.  The cell generated from meiosis must combine with another cell from the opposite gender to create a viable embryo.
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Mitosis is the splitting of one cell into two daughter cells.  The phases can be summed up into the acronym IPMAT.\n\nI interphase - has a G1 or growth one phase where cellular growth and DNA translation occur.  S or Synthesis phase where DNA is translated assembled and condensed.  G2 or growth two phase where cytoplasmic growth occurs.\n\nP prophase - where DNA starts condensing into chromosomes and centromeres polarise the cell forming spindal fibers.\n\nM metaphase - is when DNA is fully condenced and chromosomes are in equatorial allignment\n\nA anaphase - karyokenesis is complete, new nuclear membranes form and cytokenesis begins furrowing.\n\nT telephase - clevage furrowing completes to initiate a new G1 phase.
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Mitosis is when a cell divides to create two daughter cells that are identical. Meiosis is the process by which eggs and sperm are created. In meiosis a cell divides and each daughter cell has only half the DNA.
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Mitosis result in 2 cells that are typical to the parent cell. it also occurs in all type of cells\nMeiosis result in 4 cells each of them have half of the chromosomal material of the parent cell. it occurs in gametes
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http://images.search.yahoo.com/search/images?p=meiosis&fr=FP-tab-img-t&toggle=1&cop=&ei=UTF-8
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Meiosis only happens in sex cells. Mitosis happens in all other cells. When mitosis happens the cell splits in two. Meiosis forms 4 cells, in females only one is an egg, in males all four are sperm. Meiosis goes twice through every stage, ie   metaphase.
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Meiosis is also known as reduction division.\nIt is a type of nuclear division that gives rise to four reproductive cells (gametes) each with half the chromosome number of the parent cell. Two consecutive divisions occur. In the first, homologous chromosomes become paired and may exchange genetic material before moving away from each other into separate daughter nuclei. This is the actual reduction division because each of the two nuclei formed contains only half of the original chromosomes. The daughter nuclei then divide by mitosis and four haploid cells are produced. Four stages, prophase, metaphase, anaphase and telophase\n\nMitosis is a type of nuclear division that results in two daughter cells each having a nucleus containing the same number and kind of chromosomes as the mother cell. each chromosome divides lengthwise into two chromatids, which seperate and form the chromosomes of the resulting daughter nuclei. Four stages as well prophase, metaphase, anaphase and telophase, which merge into each other. Mitotic divisions ensure that all cells of an individual are genetically identical to each other and to the original gertilized egg.
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The purpose of both mitosis and meiosis is to take one cell and make two cells. Before the cells do this though, they have to make sure that a few things are in order. Obviously, there has to be enough stuff for the 2 cells to each be able to live independently. so, there has to be duplication of a lot of stuff before the first cell (let's call it the parent) divides. One of these things is the genome. These are the chromosomes which are made up of DNA. Once the DNA replicates (makes 2 copies of everything from what the parent originally had), the cell can divide. There are now 4 chromosomes of each type, we started out with our usual 2 of each (most organisms have 2 of each chromosome and they differ slightly from each other-this becomes important for meiosis), then when everything duplicated, we got 4! \n\nIn MITOSIS, the 2 cells that come out of the division (lets call them the daughters), are EXACTLY the same in genetic makeup as the original mother cell. They have the very same DNA and therefore make the same proteins and therefore the cells behave the same. \n\n In MEIOSIS on the other hand, the cells are not the same at all. And in fact, this is the point of meiosis - to make new types of cells. You may know that eggs and sperm are products of meiosis, but you not only get a mixing of genes from your mother (from the egg) and father (from the sperm), but the genes inside the egg and sperm are pre-mixed because of meiosis. Thus, genetic diversity!, and an explanation for why you have traits given to you from your grandmother through your father, even though your father may not have that trait (he carries it in his genes for later mixing). This may be a complicated issue in itself but since we have 2 of every chromosome and therefore 2 of every gene (even before the DNA replication that preceeds mitosis), there's a chance that the 2 copies of the same gene are different, one of which shows up in your father and one which you have that you got from your grandmother throuh your father. The mixing, by the way comes about because after the DNA replicates in preparation for cell division. This is neat and involves chromosomes breaking apart and joining back together. Take a look at the animated movie of meiosis at http://www.biology.yale.edu/animatedMeiosis.nclk - make a point to notice the red and green chromosomes at the beginning and the mixed ones at the end.
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mitosis is not the 2nd part of meiosis. \ncrossing over does not happen in mitosis basically because there is no need to do so. \ncrossing over occurs in the 1st part of meiosis  when the 2 pairs of homologous chromosomes come together in the prophase part of meiosis--one pair of chromosomes from each parent. that is where the exhcange of genes occur in order to add variation between the 4 daughter cells.\nin mitosis, the homologous chromosomes do not come together. the DNA simply copies itself and will eventually lead to the split into 2 identical daughter cells.
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Prophase\nPrometaphase\nMetaphase\nAnaphase\nTelophase\nCytokinesis\nclick here:http://en.wikipedia.org/wiki/Mitosis#Phases_of_mitosis
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mitosis:the process in cell division by which the nucleus divides, typically consisting of four stages: prophase, metaphase, anaphase and telophase.\n\nmeiosis: (genetics) cell division that produces reproductive cells in sexually reproducing organisms; the nucleus divides into four nuclei each containing half the chromosome number (leading to gametes in animals and spores in plants) \n\nosmosis:Transmission of fluids from one cell into another; foundation of metabolism, led by the concentration of salt within a cell. Water can penetrate cell membranes, and strives to, where the concentration of salt is highest, in order to equalize the salt concentration in the body.
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Firstly you should ask the proper ques. The ques. should be like this "What is the difference b/w meosis and mitosis".\n        The answer to your ques. is:-\n       MITOSIS                                       MEOSIS\n* Takes place in somatic                  * Takes place in reproductive\n   cells                                                   cells                                    \n* Produces two cells                         * Produces four haploid cells\n* No crossing over                             * Crossing Over takes place\n*The no. of chromosomes re-           * The no. of chromosomes \n  mains the same after mitosis             is reduced to one-half after\n                                                              meiosis
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1.  It's meiosis not meisosis\n\n2. sure just go to en.wikipedia.org and on the left look up meiosis\n\n3.  or just go to this link.  http://en.wikipedia.org/wiki/Meiosis