what's the biggest difference between meiosis and meitosis? anyone have a pnemonic device to remember it?
457393
mitosis is the process of nuclear division in which the chromosomes replicate and become equally distributed into two daughter so that they hane the same number and type of chromosomes as present in the parent. it was first observed by Strasburger(1870) in plants and by Boveri & Fleming(1879) in animal cells... its also known as somatic division as it involves only the somatic body cells, also since its keeps the chromosome numeber the same its also known as equitorial division..\n\n\nmeiosis occurs in diploid cells and gives rise to four haploid nuclei, each havin n/2 number of chromosomes, here n is the number of chromosomes.. in this the nuclei divides twice but the chromosomes are replicated only once....\n\nits divided into 2 stages\n1. Meiosis 1\n2. Meiosis 2\n\neach have a number of sub stages..\n\nthere are 1000's of major differences, i'll sorting them, its upto u to remember the one... and as far as the pneumatic device is considered, it's common 2 all of us..\n\n\n1. Mitosis takes place in somatic cells, whereas Meiosis in reproductive cells.\n\n2. mitosis occurs in both haploid & Diplois, meiosis in diploid only.\n\n3. 2 & 4 daughter cells produced resp..\n\n4. CHROMOSOMES REPLICATE IN THE INTERPHASE BEFORE EVERY DIVISON IN MITOSIS BUT IN MEIOSIS THEY REPLICATE ONLY ONCE PRIOR TO MEIOSIS.
762313
After mitosis you have two daughter cells that are from the first cell.  I believe they are identical and the only differences is the amount of cytoplasm (which happens during anaphase and continues thru telophase)  Hope I helped a little.
196196
Well, as you may already know, 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.
1128831
In very simple terms:\n\nmitosis is the division of somatic cells, one cell divides and the end result is 2 cells.   \n\nmeiosis is the division of germ cells, one cell divides into two first and those two divide again, and the end result is 4 cells.
543285
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.
928357
lets see differences would be\nrespiration \nmovement\nreproduction\ncell division mitosis meiosis\nno response\nno energy requirement\nno exchanges of material\nno active transport \ntemprature drop\nenzymic activity\nvirus activity\n\ncant think of anymore will reply wid some mre later
957169
That's a new one. As a biologist I've never come across the notion that meiosis is explained by the Garden of Eden. \n\nScience is about understanding processes and mechanisms by investigation. No answer is ever complete. Every answer begs a further question. The explanation "God did it, let's stop asking questions and celebrate him" is absolute anathema to all biologists.
839480
Hi Erica, \n\nI'd waste both your and my time if I try to answer this question with lots of detail. I'd suggest you go to your textbook, flip a few pages here and there, get a broad idea and then, come back and read this answer. \n\nPlease notice that I'll have to make this answer less complex by generalizing concepts and avoiding some fine details which you can easily read in your textbook.\n\nNow, without wasting much time, here is my answer-\n\n===================\n\nCharacteristics of animal sexual life cycles-\n\n1- Usually, there are two parents- male and female. Both form special haploid cells called gametes by meiosis.\n\n2- Gametes fuse in pairs to form diploid cells called zygotes (fertilization).\n\n3- Repeated mitotic divisions of the zygote forms embryos.\n\n4- And the embryo develops into a new individual.\n\nSooo simple!\n\n====================\n\nCharacteristics of plant sexual life cycles-\n\nIt is same as animal sexual reproduction. Just that the technical terms and the methods of reproduction are a little different in flowering and non-flowering plants. I suggest you to read your textbook for the detailed terminology.\n\nIn plants-\n\n1- Diploid sporophytic cells divide by meiosis to give haploid gametophytic cells.\n\n2- Haploid gametophytic cells from male and female fuse to form the diploid zygote.\n\n3- The zygote then develops into an embryo and then to a full diploid plant body.\n\n* There are lots of finer details like the flowering system in flowering plants: pollens, ovules etc. and sporangia in non-flowering plants. I suggest you to study the life cycles of different bryophytes, gymnospermae and angiospermae to get the idea.\n\n================\n\nCharacteristics of fungal sexual life cycles-\n\n1- It involves fusion of two compatible sex cells/ gametes. The sex organs that produce gametes are called gametangia.\n\n2- The gametangia of fungi are unicellular and are surrounded by a sterile jacket. In fungi, there is a gradual reduction in sexuality from lower to the higher fungi.\n\n3- In the first stage, the cytoplasms of two sex cells fuse with each other but the nuclei do not fuse. The cell is thus called a dikaryon. (Plasmogamy).\n\n4- The nuclei then fuse to form the synkaryon. (Karyogamy).\n\n5- The diploid cell after that, produces haploid nuclei by meiosis.\n\nThere are broadly five types of sexual fusion in fungi.\n\nHere they are-\n1- Planogametic copulation. \nOne or both of the gametes are motile.\n\n2- Gametangial contact. \nThe two gametangia come together and the male gametangia forms a tube through which the male non-motile gamete is sent to the female gametangia.\n\n3- Gametangial copulation. \nThe gametangia themselves fuse together and lose their sexual identities to form zygospore.\n\n4- Spermatization. \nNumerous spore-like minute bodies (spermatia) are sent through various agencies to the receptive hyphae or trychogyne of female gametangium.\n\n5- Somatogamy.\nIn this mode, sex organs are not formed and the fusion occurs two vegetative cells resulting in the formation of dikaryon.\n\n=================\nI hope the above info helps.
840584
good way to remember - mitosis happens in my toes - asexual reproduction of cells, otherwise known as growth.\n\nMeiosis is the process by which sexual reproduction occurs, as in a combination of gametes (containing half the necessary genetic material) to create a new cell.\n\nAlleles are portions of genetic material that have a physical (or phenotypic) effect. These are usually sections of chromosomes, bundles of colied and intertwined DNA.\n\nMutation is any alteration of the Deoxyribonucleic acid (DNA) or Ribonucleic acid (RNA). Evolution could not occur without mutation. Intelligent Design is a bunch of nonsense. It's all random and we are very lucky to be alive and sentient. Don't waste your intelligence on Yahoo Answers. I will now follow my own advice...
310963
(m)\n\nIn biology, meiosis is the process that transforms one diploid cell into four haploid cells in eukaryotes in order to redistribute the diploid's cell's genome.\n\nMeiosis forms the basis of sexual reproduction and can only occur in eukaryotes. In meiosis, the diploid cell's genome, which is composed of ordered structures of coiled DNA called chromosomes, is replicated once and separated twice, producing four haploid cells each containing half of the original cell's chromosomes. These resultant haploid cells will fertilize with other haploid cells of the opposite gender to form a diploid cell again. The cyclical process of separation by meiosis and genetic recombination through fertilization is called the life cycle. The result is that the offspring produced during germination after meiosis will have a slightly different blueprint which has instructions for the cells to work, contained in the DNA. This allows sexual reproduction to occur.\n\nMeiosis uses many biochemical processes that are similar to those used in mitosis in order to distribute chromosomes among the resulting cells; however the outcome is very different.\n\ngoto the following link for details about meiosis\nhttp://en.wikipedia.org/wiki/Meiosis
203034
"karyo" refers to the nucleus and "cyto" refers to the rest of the cell (as in cytoplasm). kinesis=motion
750284
Meiosis occurs after sexual maturity in both male and females.\nIn males in happens almost all the time after maturity, as males need to produce millions of sperm.\nIn females it happens approximately once a month and happens much more slowly, producing one gamete (egg or oocyte) for use.
134414
Two, one in each phase of meiosis (I and II).\nBut the textbook can tell you that, my advice is you try and understand how it works.
947432
It is definitely the chromosomes that divide in both mitosis and meiosis. However, the whole cells divides so # 1 sounds like the right answer. Did you ask in class? I am glad you are asking here , but you really should ask your teacher.
23154
I'm not a cellular biologist, but I do remember meiosis v. mitosis!  Try go ogle image search.  I found the following image on Go ogle.\n\nhttp://www.anselm.edu/homepage/jpitocch/genbio/meiosisphases.JPG\n\nYou would have to give credit to the original source if this is used for anything other than educational use.
124582
Meiosis II is the second part of the meiotic process. Much of the process is similar to mitosis and meiosis I. \n\nProphase II \nIf needed, the nuclear membrane and nuclei break up while the spindle "network" appears and the chromosomes begin migrating to the metaphase II plate (at the cell's equator).\n\nMetaphase II \nThe chromosomes line up at the metaphase II plate at the cell's center. The kinetochores of the sister chromatids point toward opposite poles.\n\nAnaphase II \nThe sister chromatids separate and move toward the opposite cell poles.\n\nTelophase II \nDistinct nuclei form at the opposite poles and cytokinesis occurs.\n\nAt the end of meiosis II, there are four daughter cells each with one half the number of chromosomes of the original parent cell.
504487
The purpose of meiosis is to form haploid germ cells.  These cells only contain half the normal number of chromosomes, which is necessary during the fertilization process.  Each parent contributes half the normal number of chromosomes, thereby creating unique DNA within the offspring.  I hope this helps.