How are the white blood cells harvested during a karyotype?
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a small volume (1 to 10 ml) of blood is taken, cultured in medium containing a mitogen(to induce WBCs to divide)and placed in a 37 c incubator for about 72 hours. Then a mitosis-arresting agent is added. After treatment with a hypotonic solution like 0.075M KCL(so that the cells will swell and chromosomes spread)the cells are fixed with a fixative (usually made from one part acetic acid to three part methanol)and mixed thoroughly.then a drop of this cell suspension is put on a slide and placed on a hotplate(or in an oven overnight).Harvesting means the step after KCL treatment, when you add fixative.
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MOST blood is transfused as pRBC's (packed red blood cells). Red blood cells have no nucleus, and therefore carry no DNA. \n\nRarely whole blood is transfused which contains DNA carrying white blood cells, usually have too many cell surface proteins that are recognized as not self (or foreign) and are destroyed.
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to separate the sister chromatids, dragging one to each side of the cell on either side of the metaphase plate.  This allows replicated chromosomes to be divided between the original cell and the newly forming cell.
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Let's assume you want a human example.\nHuman cells have 46 chromosomes.\n\nIn Meiosis 1:\nProphase 1- chromosomes replicate, join with homologous pairs to become tetrads.\n--46 chromosomes paired, 23 tetrads, and 92 chromatids\nMetaphase 1- same numbers as prophase\nAnaphase 1: 46 chromosomes (double stranded), 92 chromatids\nTelophase 1: end: 23 chromosomes (double stranded), 46 chromatids per cell\n\nProphase 2: same as Telophase 1\nMetaphase 2: same as Telophase 1\nAnaphase 2: 46 chromosomes, zero chromatids\nTelophase 2: end: 23 chromosomes per cell.
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A whole cell goes through it...including all of the chromosomes.\n\nA sex cell will duplicate its genome so that it has pairs of paired chromosomes...then it splits.  It then splits again so that there are 4 cells that are now haploid which means they only have 23 chromosomes instead of the diploid state of 46...well, for the human genome, anyway.  When two haploid cells(sperm and egg) come together they create a diploid zygote that develops into an embryo.
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Your bone marrow makes red blood cells and white blood cells all day long.  Your blood is never the same every day.  The cells die off all the time all day and night.  Donating blood is to give other people blood products like red blood cells, plasma and other things so that if they lose blood during surgery it can be replaced or if people are anemic and need it because their bone marrow is not producing enough for their bodies needs.  Hope this helps\n\n\nOMG bone marrow transplants are NOT for white blood cells. There are injectable medicines that they give people who do not have enough white blood cells that forces their own marrow to make more of the white blood cells.
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"karyo" refers to the nucleus and "cyto" refers to the rest of the cell (as in cytoplasm). kinesis=motion
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Chromosomes are collections of genes which are coded in DNA molecules. Because after the split each daughter cell should be genetically identical to the parent cell, the cell division starts with the parent cell making a copy of each chromosome. \n\nEach chromosome now contains two identical copies of itself, called sister chromatids.\n\nDuring the dividing process the chromatids are split, and one half ends up in each of the two daughter cells.\n\nErrors in the cell splitting process are rare, but the process may go wrong, especially during the early cellular divisions of an embryon.
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store information about the cell. its mostly hereditary.
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first i had blood drawn,when that showed a low count in my white cells,i had a bone marrow done,that is when they found the cancer and what kind i had.from there i was taken care of.good luck!
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It varies.\n\nSometimes it is A positive,\n\nSometimes it is O positive.\n\nYes, I know it cannot happen, but that is how the test results come back.\n\nOh, and the red blood cells are being eaten by the white blood cells.
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from original cell 2 from those (daughter cells)  they each split again which results in 4 cells...hope this helps...the question is hard to understand
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Yes. At Metaphase the chromosomes line up on a central axis, then during Anaphase, they separate
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It doesn't matter that they are fish cells.\nThey will look the same as these stages in any other cell except there will be a different number of chromosomes
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none\n\n\nyou start with one pair of homologous chromosomes in prophase I of meiosis I.  at metaphase I, these homologues line up across the metaphase plate, and at anaphase, they seperate so that one homologue goes to one pole, and the other homologue goes to the other pole.  after cytokinesis at the end of telophase I, you have one homologue in each cell...that homologue then goes through meiosis II, and at metaphase II, that homologue lines up at the metaphase plate with each sister chromatid facing each pole, and the chromosome is "pulled apart".  Anaphase II pulls the sister chromatids to each pole, and cytokinesis splits the one cell into two....two cells, each containing one sister chromatid of a homologous pair. (although in some text books this is refered to as a single homologue)
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the chromosomes group together.
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Damn! This is a toughie! What class is this for?!\n Okay, White Blood Cells were discovered in 1922. That's the first link.\n I'm not sure they recorded this persons name.... it must be somewhere out there, but I can't find it. At least we got the year though.....