how does dna seperate?
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By the use of the enzyme DNA helicase
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If you're talking about which species a strand of DNA is a part of, these are recognized by comparing to known types for degrees of similarity.  For instance, we recognize a bit of DNA as being dgog DNA if it bears resemblance to DNA we took from a dog.\n\nOther than that, each bit of DNA is iether coding or non-coding (mostly, it's non-coding--but don't let the term "junk DNA" fool you, because it's very important for structural reasons).  In the coding regions, every three neceotides forms a "codon," and every codon relates to a single amino acid in a peptide chain sequence.  These peptide chains form proteins, which are the builiding blocks for just about every function in the cell body.  Lipids, sugars, and catalytic RNAs do so functions, but other than that, virtually everything is done by proteins.  they cause motility in cells, control transport, sort things, build nucelic acids, lipids, and sugars, create energy from food, detect light and pressure and other stimuli, link cells together, send messages--pretty much everything.  We call DNA the blueprint of the organism because it is the blue print for the proteins which do most of the work in defining and controling the organism.
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Generally there are different types of DNA(A,B,Z ,e.c.t)\nBut DNA occure in different shapes thats because of Major and Minor grooves of the DNA
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DNA is an abbreviation for Deoxyribonucleic Acid. \n A piece of a chromosome that dictates a particular trait is called a gene. \n Each DNA strand is 10 atoms wide. \n The DNA stands in your body stretched out would be about 500 million miles long. \n There are so many millions of base pairs in each person's DNA that every person has a different sequence
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Once you put a current across the gel, the DNA is carried through the gel due to its negative charge.  If a mixture of different sized pieces of DNA are loaded, they will be separated based on their size; smaller pieces will travel faster than larger ones.
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its DNA it is a part of a gene which is a thing wich codes for something. it is a double stranded structure. its also called a polynucleotide.
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Could be one of two things:\n\n1) a portion of the DNA is replicated so that it can be towed out of the nucleus and used to direct cellular activities.\n\n2) the entire strand of DNA is replicated at the beginning of cellular division, with one copy going to each new cell.
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DNA has the form of a double helix. It is also anti parallel.
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DNA=Deoxy Ribon Nucleic Acid.\n\nits the material in a nuclei i n a nucleus, in acell that stores the cells information.\n\n~LG23~
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A strand of DNA contains genes, areas that regulate genes, and areas that either have no function, or a function which we do not (yet) know: also see last bullet point in this section for the difference between DNA and RNA; \nDNA is organized as two complementary strands, head-to-toe, with bonds between them that can be "unzipped" like a zipper, separating the strands; \nDNA is a chain of chemical "building blocks", called "bases", of which there are four types: these can be abbreviated A, T, C, and G. Each base can only "pair up" with one single predetermined other base: A+T, T+A, C+G and G+C are the only possible combinations; that is, an "A" on one strand of double-stranded DNA will "mate" properly only with a "T" on the other, complementary strand; \nU occasionally replaces T, notably in PBS1 phage DNA; you can thus substitute "U" for "T" throughout this section. \nBecause each strand of DNA has a directionality, the sequence order does matter: A+T is not the same as T+A, just as C+G is not the same as G+C; \nFor each given base, there is just one possible complementary base, so naming the bases on the conventionally chosen side of the strand is enough to describe the entire double-strand sequence; \nThe genetic
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DNA replicates for cell division.  The new cell gets the same DNA as the parent cell.  DNA replicates during mitosis.  DNA also replicates into RNA.  This is done inside the nucleus.  RNA is the exact opposite copy of DNA.  RNA aids in the synthesis of proteins.  The RNA goes to the ribosomes and synthesizes proteins.
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Well, there are quite a few ways. You could look and see that DNA has A bonded to  T and G bonded to C (which you could look up their exact make-up to discern them from other compounds, they are just simple nucleotides which form a chain to create what we call DNA). \n\nYou could tell by how their subunits are connected. DNA will have repetitive phosphodiester linkages (bonds between a  phosphate of one nucleotide and a carbon of another) which hold it together. Proteins on the other hand will have peptide linkages (bonds between a carboxyl group of an amino acid to an amino group of another; amino acids are much like nucleotides in DNA, they form chains to create proteins). \n\nDNA will be in a double helix, while proteins will be in all sorts of conformations (which is where they get their uses). \n\nSince proteins are just chains of amino acids you could recognize the specific amino acids on proteins (there are only 21 and all of their structures are known. note:*Ohio State University claims to have found a 22nd* ), thus making the substance a protein and not DNA since DNA has no amino acids in it. \n\nBut assuming  you could only look at the atoms like your question states and not how or what they they are connected to, you could still discern DNA from protein. DNA has phosphate since nucleotides (the things that make up DNA) are composed of a nitrogenous base, a deoxyribose sugar, and a phosphate group, while proteins have amino acids (none of which have phosphates) connected by carbons and nitrogens. So if for some reason you have the known number of atoms in two substances, but didn't known how they were connected and you were asked which one is the protein and which one is the DNA sequence. You would conclude that the one with the phosphate is indeed the DNA.
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I'm almost 100% sure that the answer is "It ensures that the DNA will be replicated for new cells"\n\nWhat the question is talking about is the way in which the bases pair together.  I'm sure you've been taught that the bases pair as follows:  A-T and C-G.  When DNA is replicated, it is "unzipped" leaving two strands of DNA that each have bases that aren't paired.  In order to make 2 new complete strands, the correct bases must be added to each of these half-complete strands.  This is where the question comes into play.  If the bases could pair in any way possible the new strands would not be identical to the original.  This is why it is critical that A only pairs with T and C only pairs with G.\n\nI hope this helps.  Questions like this really test your knowledge of the material.  It is one thing to know A-T and C-G.  It is another to know why these combinations are critical in the process of replicating DNA.
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Okazaki fragments \n\nshort fragments of newly synthesised dNA strands produced during dNA replication. All the known dNA polymerases can only synthesis DNA in one direction, the 5' to 3' direction. however as the strands separate, replication forks will be moving along one parental strand in the 3' to 5' direction and 5' to 3' on the other parental strand. On the former, the leading strand, DNA can be synthesised continuously in the 5' to 3' direction. On the other, the lagging strand, dNA synthesis can only occur when a stretch of single stranded DNA has been exposed and proceeds in the direction opposite to the movement of the replication fork (still 5' to 3). It is thus discontinuous and the series of fragments are then covalently linked by ligases to give a continuous strand. Such fragments were first observed by okazaki using pulse labelling with radioactive thymidine. In eukaryotes, okazaki fragments are typically a few hundred nucleotides long, whereas in prokaryotes they may contain several thousands of nucleotides.
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1. A DNA molecule refers to just a double stranded molecule but a chromosome is a condensed form of DNA complexed with proteins. An intermediate is the chromatin which is a network of fibrils consisting of DNA and they exist when the cell is not dividing.\n\n2. Prokaryotes have a single chromosme that contains only few proteins and appear as an electron-dense irregular shaped region called the nucleoid which is not enclosed by membrane. If you stretched this out, the chromosome would be a circular loop attached to the plasma membrane of the cell. Also, when they replicate, the replication occurs in two directions at once since the DNA molecule is cirular. Eukaryotes have much more proteins and when not being replicated are in the membrane bound nucleas as chromatin. Then the DNA replicates, it is dones by numerous origins of replication initially called replication bubbles that meet up to form replication forks. The broken segments of this replication method is calked Okazaki framents.\n\n3.Autosomal chromosomes are the rest of the chromosomes that are nonsex and are the same no matter what sex the person is. For example, there are 46 chromosomes in humans and one PAIR is your sex chromosome which determine your sex (girl = XX and boy = XY) while the other 44 are autosomal which you inherited no matter what your sex was.\n\n4. The word "complexity" is hard to define here because it is ambiguous and subjective. To us humans, a zebra may seem less complex since we cant tell them appart, but from the zebra's prospective, their unique stripe patterns differntiate very clearly who is who. At birth, the mother zebra spends 20 min. with its calf so it can memorize stripe patterns. However, understand the aim of the question, the answer is no. There is no proven evidence that shows a direct correlation of chromosome number to complexity. Well, you may think that since there are more chromosomes, these organisms have more alleles coded for them and are thus more complex. Not necessarily true. Some genes code for mutliple traits while others may have multiple genes for one trait. Also the vast number of genes that are coded in a single chromosome is very high. Ex. A Human has 46 chromosomes but a Crayfish has 200! Therefore more chromosomes do not mean higher "complexity" (at least in this implied definition)
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It is not possible to divide a cell without replicating its DNA. This is how it works: DNA replicates during interphase. So now we have two copies of the same genetic material. These two copies then split apart into two cells in mitosis and cytokinesis. The result is two identical cells with the same genetic material as the parent cell.\n\ndid it help, or make it more confusing?
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The nucleus of an animal cell contains the DNA, a complete bluprint for creating an entire animal or when differentiated for creating specific tissue types.  The many genes in the nucleus could be pictured as a set of many ladders of various lenghts (rungs).  When the cell divides, half of each ladder collects in each new cell and regrows the missing halves.  The two halves are not identical, much like sawing the rungs of a real ladder on either side of the center and having rungs made of combinations of only four materials.  Actually, DNA is more like a twisted ladder, a helix.