How many chromosomes are in a human cell?
83183
23, I'm not sure, but look in your book or the internet to make sure.
870300
Measuring chromosomes as a whole isn't a very good way of determining relationships between species. Although humans have 46 chromosomes (23 pairs) versus chimps' 48 (24 pairs), it's clear from looking at the structure of the chromosomes themselves that one of the human ones is composed of two of the chimps ones that have joined together. We can even see the end markers of the chimps genes in the middle of our joined one.\n\nIn terms of overall genetic difference between humans and chimps, it depends on exactly how you measure it but it's between 1 and 4 per cent. \n\nUnfortunately the answers given earlier about pigs being closer aren't accurate. They share large-scale physiological similarities, which is why heart ops may be possible, but this has nothing to do with DNA.\n\nA good reference for all this stuff is the Talk Origins archive at http://www.talkorigins.org
99527
a somatic cell is any cell of the body except germ cells.[sex cells].thus a normal somatic cell has 46 chromosomes in it.
409310
Assuming we're talking about humans ...\n\nIn the female gamete (the ovum, or egg cell) the DNA in the nucleus is contained in 23 chromosomes.  One of these is the sex chromosome, but this is always an X chromosome.  Outside the nucleus are additional pieces of DNA ... most notably, DNA in the mitochondria of the cell, which will get passed intact to the offspring.\n\nIn a male gamete (spermatozoan or sperm cell) the DNA in the nucleus is also contained in 23 chromosomes.  One of these is the sex chromosome and is either a Y or an X chromosome.  This will determine the gender of the offspring.  Sperm cells also have DNA in their mitochondria, but these are discarded upon fertilization (so the offspring gets mitochondrial DNA exclusively from the mother).\n\nUpon fertilization, the two gametes make a zygote.  The 23 chromosomes from each (haploid) gamete produces a complement of 46 total chromosomes in the (diploid) zygote.  The pair of sex chromosomes determines the gender of the developing offspring ... XY is a boy, XX is a girl.
957172
If you are talking about Somatic division (mitosis) , just before division the mother cell will  have 23x2 chromosome pairs that is 23x2x4 chromatids in all. The daughter cells get 23x2x2 chromatids=23 pairs of chromosomes each. In case of meiosis, one more division leads to 23 singlet chromosomes (=23x2 chromatids) each in a daughter cell.
30981
Yes it is 4. Since the diploid number of chromosomes in a cell is 4, there will be two pairs of homologous chromosomes. During crossing over the homologous chromosomes exchange their genes and hence now we have 4 different chromosmes.
897332
26\n\nIn meiosis, the chromosome pairs are divided in half so the new cell has 1 of each.  This is because this is used to produce cells for reproduction.\n\nWhen 2 of these cells come together,they create 52 chromosomes again to create a new organism with half of each parents genetic material.
782761
Well, in human cells it's about 3 hours.  There are 3 billion base pairs in the human genome, so that's around 1 billion bp/hour (depending on temperature) for complex prokaryotic cells.
108939
One of the most obvious differences between the DNA of different species is the number of chromosomes.  If you have intact cells, you can do a DNA smash and stain and see how many chromosomes there are - for example dogs have 78 chromosomes, while humans have only 46.   Molecularly, there is no difference, besides a few genes which differ in sequence.
855606
It depends on the type of cellular reproduction. If the new cell is produced by mitosis then there would be 52 chromosomes because it would be a diploid cell as well. But if the new cell is produced by meiosis then there would be 26 chromosomes because it would be a haploid cell.
1117207
Copied from website...\n\nMitosis is responsible for growth and development, as well as for replacing injured or worn out cells throughout your body. For simplicity, we have illustrated cells with only six chromosomes.\nClick for larger image\nInterphase : Chromosomes duplicate, and the copies remain attached to each other. \nProphase : In the nucleus, chromosomes condense and become visible. In the cytoplasm, the spindle forms. \nPrometaphase : The nuclear membrane breaks apart, and the spindle starts to interact with the chromosomes. \nMetaphase : The copied chromosomes align in the middle of the spindle. \nAnaphase : Chromosomes separate into two genetically identical groups and move to opposite ends of the spindle. \nTelophase : Nuclear membranes form around each of the two sets of chromosomes, the chromosomes begin to spread out, and the spindle begins to break down. \nCytokinesis : The cell splits into two daughter cells, each with the same number of chromosomes as the parent. In humans, such cells have two copies of 23 chromosomes and are called diploid.
617905
First of all we have 23 pairs of chromosomes (or 46 chromosomes), and monkeys have  22 pairs of chromosomes. Big deal right? WRONG. When humans make gametes (sperm and egg) each gamete contains a one copy of the hosts DNA, therefore each gamate only contains 23 chromosomes. When the sperm reaches the egg they combine together (zygote) to from a cell that has 46 chromosomes. Any deviation from this number makes the an embryo inviable. ( we wont get into ploidy or trisomys here). Therefore if a human and an ape mated, the chromosome count coming from the human would be 23 and the money would be 22 making the chimera have 45 chromosomes. First of all essential genetic coding inforemation is lost. (AN ENTIRE CHROMOSOME IS MISSING), you have changed the specie. You have created an alleuploidy. (only viable with some plants). The chromosomes in each species are of different sizes. This totaly screws up the cellular functions and inhibits a proteins job. They would not be able to reproduce. And please do not get me started on Mullers moprhs in terms of loss of genetic information, regarding epistasis, incomplete dominance etc.... All you need to know is it would be inviable because the chromosomes are of different numbers, and the chromsome sizes are different.
875805
Both parents for the organisms that the cell is living in!\nIn order to be a functional cell, it needs 46 chromosomes.\n23 of them come from the organisms mother, and 23 from the organisms father.\n\nIt isn't talking about the organism this gamete may become, but rather the parents of the organism that the meiosis is going on in...
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.
831782
i have 56 chromosomes...im special
79598
Both previous answers are inaccurate.\n\nMitosis is sometimes called growth division. In plants and animals new cells are made continually. Mitosis results in two new cells identical genetically to the original which divided.\nWe are diploid animals which have 23 pairs of chromosomes. After mitosis both cells still have 23 pairs of chromosomes.\n\nMeiosis is a division which produces sex cells (sperm or ova). After division is complete, each sex cell has half the number of chromosomes; it is haploid. So instead of having 23 pairs the sex cells will have 23 chromosomes - one of each type of chromosome.
1068360
dna and genetic coding of chromosomes.