How do diploid cells differ from haploid cells?
363119
Haploid\nHaploid cells bear one copy of each chromosome.\n\nMost fungi, and a few algae exist as haploid organisms. Male bees, wasps and ants are also haploid. For organisms that only ever have one set of chromosomes, the term monoploid can be used interchangeably with haploid.\n\nPlants and other algae switch between a haploid and a diploid or polyploid state, with one of the stages emphasized over the other. This is called alternation of generations. Most diploid organisms produce haploid sex cells that can combine to form a diploid zygote, for example animals are primarily diploid but produce haploid gametes. During meiosis, germ cell precursors have their number of chromosomes halved by randomly "choosing" one homologue, resulting in haploid germ cells (sperm and ovum).\n\n\nDiploid\nDiploid cells have two copies (homologs) of each chromosome (both sex- and non-sex determining chromosomes), usually one from the mother and one from the father. Most somatic cells (body cells) of complex organisms are diploid
268425
Mendel's law of independent assortment basically says that each chromosome pair will separate during meiosis individually, regardless of whether the chromosome originated maternally or paternally.  So for example, if there are two pairs of chromosomes, 1 and 2, and each have a maternal and paternal copy (1M, 1P, 2M, and 2P), pairs 1 and 2 will segregate without input from the other pair.  So during meiosis, when the a haploid cell is formed with only one chromosome copy, there are many different combinations that can be formed.  The cell could contain 1M/2M, 1M/2P, 1P/2M, or 1P/2P.  It is easy to see how organisms with more chromosome pairs (humans have 23 pairs, 46 total) will produce more combinations, hence diversity among the species.  Hope that helps!
175444
First of all, gametes are produced only through meiosis and the location only occurs in the gonads(testes or ovaries). \n\nMitosis occurs all over the body for growth and repair while mitosis is for reproduction. Mitosis undergoes only one cell division to produce two identical daughter cells. Meiosis has 2 cell divisions producing 4 haploid daughter cells with mixed genes by synapsis and crossing over.
41904
I know of two kinds of cells that are not regenerated: Brain cells (neurons) and if you are female, eggs cells in the ovary.  The ones you are born with are still with you.
104056
The products of mitosis are 2 genetically identical daughter cells and the products of meiosis II 4 genetically dissimilar haploid cells.  Meaning these cells only have half the amount of chromosomes of the parent cell and these chromosomes are genetically unique, even between each other.  Pretty cool huh?  This is the explaination for everyone being genetically unique!
243784
It is haploid, only having 23 chromosomes until it is fertilized. Then it is diploid with 23 pairs(46 total) of chromosomes, and is capable of growing into a baby.
897395
a. Selective gene expression.\nAll diploid cells in an organism have the same genome. Specific genes are turned on or off by environmental conditions, such as hormone levels, chemicals introduced, the action and metabolites of surrounding cells. A stem cell will differentiate into a specific cell based on specific conditions. \nRemember that a human baby with many different cells is made from on cell, the fertilized egg.
318041
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.
494099
same:   both have a lipid bi-layer membrane.  Both have Peripheral and integral membrane proteins.\n\nDifference:  single celled normally have cilia or flagella, single celled macrophage whereas multicelled normally don't.  Multicelled handle disease better.
60422
n 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.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.
831327
Because egg and sperm cells have only one set of chromosomes instead of two.  Most cells have a pair of each type of chromosome, plus two chromosomes which determine the gender of the individual.  Mitosis, the normal process of cell reproduction, results in two cells which each have two sets of chromosomes.  Meiosis results in cells having only one set of chromosomes.\n\nThe reason egg and sperm cells have only one set of chromsomes is simple... after sex, an egg is fertilized by combining with a single sperm cell.  Once the egg and sperm (each having one set of chromosomes) have combined, the fertilized egg has two sets of chromosomes - everything it needs to grow and live.
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.
133100
Diploid and haploid are relative to what you are studying and if you are looking for exact definitions or looking for normal state.  My diploid number is 46, because I have 46 chromasomes.  MY haploid number is 23, half of the diploid.  MY sex cells, my gametes have the haploid number of 23.
1066390
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.
938356
Cells reproduce by cell division. This is called a-sexual reproduction or binary fission or Mitosis. This type of reproduction only requires one induvidual. The cell divides in order two create two daugter cells that are identical to the original cell. First Interphase, when the cell is making copies of DNA. In Prophase, the nucleolus fades and the chromatins condense into chromosomes. In Metaphase, all the chromosomes are aligned on spindle fibers. In Anaphase, the spindle fibers dissaspear. In Telophase, the daughter chromosomes move to the poles. In Cytokinesis, not truly part of Mitosis, there are now two finallized daughter cells.\n______________________\nHope this helps!!! :) :) \nHere's for more information:  http://www.cellsalive.com/mitosis.htm
64232
Mitosis is when a cell divides into to identical daughter cells. They contain the same genome as the parent cell. The only way a daughter cell can be altered is through a mutation of DNA/RNA.
419699
Meiosis, on the other hand, is only used for making gametes!   Why do we need a special type of cell division just for making gametes?  There are two ways to answer this question.  The first is that when we produce our next generation, we do not wish to make identical individuals to ourselves... instead, we make unique individuals, different from either parent.  In order to do that, we have to be able to mix up our own genetic information into new combinations; it is these new combinations that come together during fertilization, producing an entirely unique, new individual.  Mitosis does not allow for any mixing up of genetic information-- instead, it preserves genetic information perfectly to make identical daughter cells.   Meiosis does the opposite-- meiosis jumbles up our genetic information into new combinations.\n\n    The second reason that we have to use meiosis is because we need our spermatozoa and ova to contain only half of the normal amount of genetic information.  Keep in mind that during fertilization, the spermatozoan and ovum fuse together into one, combined cell (called the zygote).  That means that their genetic information also comes together.  When each gamete has half of the normal amount of genetic information, they can come together and make a whole.  From that point forward the embryo (and then fetus and then neonate...) has a new set of genetic information, half from each parent, that is preserved for all the cells of its forming body.