what are the chemical units of information in DNA?
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Units of information in DNA are stored as hydrogen bonds linking base pairs of amino acids including thymine, cytosine, adenine and guanine.  Each base can only be linked to a single complementary base, for example, A+T, T+A, C+G or G+C.  The order, or polarity, of each base pairing is important (meaningful) in this context.  Genetic information is determined by the sequence of base pairs forming a three-dimensional chain described as a double-helix.
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DNA is an acronym for deoxyribonucleic acid, a nucleic acid. Nucleic acid is a substance in the nucleus of a cell. The nucleus is part of the cell separated from the rest of the cell by a membrane. DNA can be found in the cells of all organisms. This includes animals, plants, and all other living things. DNA contains the genetic code of the organism. This code is based on the code from that organism's parents. DNA also helps in protein synthesis.\n\nDNA is shaped like a double helix, which is like a ladder twisted into a spiral. Each "leg" of the "ladder" is a line of nucleotides. A nucleotide is a molecule made of ribose (a 5 carbon sugar), a phosphate group, (which is made of phosphorus and oxygen), and a Nitrogen base. Each nucleotide has one of four kinds of bases.\n\nadenine (A) \nthymine (T) \ncytosine (C) \nguanine (G) \n\nA gene is made of DNA.  Bacteria and viruses have DNA too.  The DNA molecule is shaped like a twisted ladder.  A half DNA ladder is a template for copying the whole. RNA is an intermediary between DNA and protein.    gene is a discrete sequence of DNA nucleotides.A chromosome is a package for DNA.   Some DNA does not encode protein.  Some DNA can jump.    DNA responds to signals from outside the cell.    DNA is only the starting point for understanding human biology.\nVR
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C - T - G - A\n\nIN DNA\nC matches with G\nA matches with T\n\nIn RNA\nC matches with G\nA maches with U
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Usually described as about 2 meters for all of the dna in one human cell.  This actually consists of many separate strands of dna.
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Would have to be a DNA molecule which can have 10^8 bases or 10^10 separate atoms.
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it has 20 words, and it means...\n\nNucleic Acids\n\n \nNucleic Acids are macromolecular structures which store and express all the information necessary for building and maintaining life.\nDNA (DeoxyriboNucleic Acid) is considered as the repository of the genetic information. \nRNAs (RiboNucleic Acids) may be regarded as vectors and translators of the information.\n\nFrom a chemical point of view, Nucleic Acids are giant linear condensation polymers of Nucleotide sub-units.\n \n\nA Nucleotide consists of : \n\na nitrogenous base: purine (Adenine (A) or Guanine (G)) or pyrimidine (Cytosine (C) or Thymine (T) (or Uracil (U)in RNA)).\na sugar : Deoxyribose (DNA) or Ribose (RNA).\n\na phosphate group \nA sugar and a base form a Nucleoside.\nA Nucleotide is a phosphorylated nucleoside.\nInter-nucleotide linkages are formed by a phosphodiester bond between a 5'-phosphate group and the 3'-hydroxyl group of the next nucleotide sugar. \n\nThe nucleotide sequence encodes the informations required for constructing proteins.\n\n   \nHistory\n\nIn 1860, F. Meischer a Swiss physician isolated a precipitate substance obtained by treatment of white blood cells nuclei, with alkaline solution. The chemical analysis has showed that this precipitate contained Carbon, Nitrogen, Hydrogen, Oxygen and Phosphorus. Misescher called this substance Nuclein.\n\nIn 1930 A. Kossel and P. Levene proved that Nuclein was a deoxyribonucleic acid.\n\nIn the late 1940's, E. Chargaff discovered the "equimolarity" of bases ([A]=[T], [G]=[C]) and established the coefficient of specificity ((G+C)/(A+T)), which characterise each DNA molecule.\n\nIn 1952, Hershey & Chase demonstrated that DNA molecules are the universal support of heridity.\n\nIn 1953 J. Watson & S. Crick determined the double helix structure of DNA, owing to the important Xray diffraction works made by R. Franklin. \n\nIn 1962 Watson, Crick & M. Wilkins were awarded the Nobel Prize for their discovery.\n\n \nDeoxyriboNucleic Acid\n\n\n\nThe Genome is the complete set of instructions to create and maintain an organism alive. DNA molecules are support for the Genome of all living organisms.\n\n\n \nStructure \n\nThe DNA Molecule consist of two unbranched polynucleotides chains (strands) held together in an antiparallel manner by hydrogen bonds formed between specific pairs of bases [Adenine-Thymine] [Guanosine-Cytosine]. Thus the bases sequence (code) in one strands determines the code of the other strands (complementarity).\n\n \n  \n\n \nThe joined anti-parallel strands are twisted about each other in the shape of a right-handed double helix. Indeed DNA is often depicted as a twisted ladder in which rungs are bases pairing and sides are deoxyribose-phosphate chains.\n\nThe double helix structure is mainly stabilized by hydrogen bonds between bases pairs. Since the hydrophobic bases are stacked inside and the hydrophilic ribose-phosphate chains are on the outside, Van der Waals forces and hydrophobic interactions are also deeply involved in the stabilization of the double helix. \n\nThe N-glycosic bonds (sugar-base) are not directly opposite one strand another, therefore two grooves of different width appear between ribose-phosphate chains on the surface of the molecule. In this major or minor grooves, the bases are exposed to solvent and to other molecules. By this way, some chemical and biochemical substances may have interactions with specific bases without disrupting the double helix structure.\n \n\nPolymorphism \nThere are three natural forms of DNA (A, B and Z). The origin of these different forms are related to the conformation of the sugar (C2'-endo/ C3'-endo) and the orientation of the base relative to the sugar (syn/anti).\n   \nThus depending on base composition and physical conditions (Hydration/Salt-Content), DNA can assume several different conformations (A, B, Z).\n\nEach conformation possesses specific parameters: diameter of the helix, number of bases pe
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DNA, perhaps?  Deoxyribonucleic acid, that is.
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dna and genetic coding of chromosomes.
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In DNA deoxyribose-phosphate backbone and nitrogenous bases.  The bases of DNA are adenine, cytosine, guanine and thymine.  In RNA ribose-phosphate backbone and nitrogenous bases are adenine, cytosine, guanine and uracil.  A deoxyribose-phosphate backbone is essentially a pentonse sugar (5 carbons) linked to a phosphate group in a 5' to 3' direction.  The bases are connected to the 1' end of the ribose groups. Pairing occurs by hydrogen bonding between A+T, A+U, and G+C between two strands.
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Weird question.\nDNA is what's life made of, It is a chemichal compound (nuclic acid) in the form of a double helix which has the unique ability of dividing  where each devided branch can form a new mollecule. It is the first living chemichal out of which all life evolved. It is composed of 4 groups of amino acids Citozin-Guanin-Thiamin-Adenin(spelling?)\nin short, it is the building blocks of life, DNA and RNA (Deoxy ribonuclic acid and ribonuclic acid) are the building blocks of life. Understanding their role is the key to understand heriditary, genetics and evolution.
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Deoxyribonucleic acid (DNA) is a nucleic acid —usually in the form of a double helix— that contains the genetic instructions specifying the biological development of all cellular forms of life, and most viruses. DNA is a long polymer of nucleotides (a polynucleotide) and encodes the sequence of the amino acid residues in proteins using the genetic code, a triplet code of nucleotides.\nIn complex eukaryotic cells such as those from plants, animals, fungi and protists, most of the DNA is located in the cell nucleus. By contrast, in simpler cells called prokaryotes, including the eubacteria and archaea, DNA is not separated from the cytoplasm by a nuclear envelope. The cellular organelles known as chloroplasts and mitochondria also carry DNA.\nDNA is often referred to as the molecule of heredity as it is responsible for the genetic propagation of most inherited traits. In humans, these traits can range from hair colour to disease susceptibility. During cell division, DNA is replicated and can be transmitted to offspring during reproduction. Lineage studies can be done based on the facts that the mitochondrial DNA only comes from the mother, and the male Y chromosome only comes from the father.\nEvery person's DNA, their genome, is inherited from both parents. The mother's mitochondrial DNA together with twenty-three chromosomes from each parent combine to form the genome of a zygote, the fertilized egg. As a result, with certain exceptions such as red blood cells, most human cells contain 23 pairs of chromosomes, together with mitochondrial DNA inherited from the mother.\n\nMolecular structure:\nAlthough sometimes called "the molecule of heredity", DNA macromolecules as people typically think of them are not single molecules. Rather, they are pairs of molecules, which entwine like vines to form a double helix (see the illustration at the right).\nEach vine-like molecule is a strand of DNA: a chemically linked chain of nucleotides, each of which consists of a sugar (deoxyribose), a phosphate and one of five kinds of nucleobases ("bases"). Because DNA strands are composed of these nucleotide subunits, they are polymers.\nThe diversity of the bases means that there are five kinds of nucleotides, which are commonly referred to by the identity of their bases. These are adenine (A), thymine (T), uracil (U), cytosine (C), and guanine (G). U is rarely found in DNA except as a result of chemical degradation of C, but in some viruses, notably PBS1 phage DNA, U completely replaces the usual T in its DNA. Similarly, RNA usually contains U in place of T, but in certain RNAs such as transfer RNA, T is always found in some positions. Thus, the only true difference between DNA and RNA is the sugar, 2-deoxyribose in DNA and ribose in RNA.\nIn a DNA double helix, two polynucleotide strands can associate through the hydrophobic effect and pi stacking. Specificity of which strands stay associated is determined by complementary pairing. Each base forms hydrogen bonds readily to only one other, A to T forming two hydrogen bonds and C to G forming three hydrogen bonds. The GC content and length of each DNA molcule dictates the strength of the association; the more complementary bases exist, the stronger and longer-lasting the association characterised by the temperate required to break the hydrogen bonding, its Tm value.\nThe cell's machinery is capable of melting or disassociating a DNA double helix, and using each DNA strand as a template for synthesizing a new strand which is nearly identical to the previous strand. Errors that occur in the synthesis are known as mutations. The process known as PCR (polymerase chain reaction) mimics this process in vitro in a nonliving system.\nBecause pairing causes the nucleotide bases to face the helical axis, the sugar and phosphate groups of the nucleotides run along the outside; the two chains they form are sometimes called the "backbones" of the helix. In fact, it
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DNA is transcribed into RNA (the so called messenger RNA, mRNA, to be exact). Like almost every other biochemical process, it is made possible by enzymes - in this case RNA-polymerases (we have three types, bacteria only one). It is able to "read" the template - being DNA - and use free nucleotides - the building blocks of nucleic acids - to create a complementary copy of RNA. DNA is a double stranded molecule (the famous double helix), mRNA has a single strand. This process takes place in the cell nucleus.
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1) DNA\n\n2) Chromosomes\n\n3) Genes
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a molecule of DNA is made of a double helix of nucleotides.  Inside the cells this double helix is untwisted and spread apart by different enzymes and "read"  These nucleotides that make up the double helix is uncoded in sets of threes to code for different amino acids.  When the amino acids come together they make up different proteins.  So short story short, information is stored in a molecule of DNA by a code of nucleotides.
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DNA 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;\n\nA= Adenine\nT=Thymine\nC=Cytosine\nG=Guanine\n\nI got this from wikipedia
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For DNA and RNA:\nhttp://www.visionlearning.com/library/module_viewer.php?mid=63\n\nOn fats:\nhttp://instruct1.cit.cornell.edu/Courses/ns421/Fats.html\n\nBy the way, DNA is a nucleic acid, but so is RNA\nDNA has deoxyribose sugar, while RNA has ribose\nDNA has adenine, thymine, guanine, and cytosine bases, while RNA has adenine, URACIL, guanine and cytosine.\nDNA is the "blueprint" and stays in the nucleus\nRNA has 3 types, messenger, transfer, and ribosomal\n\nHope this helps!!!
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new DNA...i dont know in new DNA but normal DNA is composed of sequences of Nucleotides which are molecules of sugar, Phosphate and a Nitric substance... sequences of predetermined Nucletides make genes...Humans have 46 chromosomes so we have 46 DNA Molecules....\n\nThis si complicated i could talk about 3 hours of DNA...why do u want to know that...this is advanced Molecular biology