what does DNA stand for?
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deoxyribonucleic acid
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Deoxyribonucleic acid (DNA) is a nucleic acid that contains the genetic instructions for the biological development of a cellular form of life or a virus. All known cellular life and some viruses have DNAs. DNA is a long polymer of nucleotides (a polynucleotide) that encodes the sequence of amino acid residues in proteins, using the genetic code.
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Just a clarification-DNA is composed of nucleic acids, not amino acids.  Amino acids are the building blocks of proteins.
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It's about the discovery of DNA and what it is made up of.
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DNA is the human or biological equivalent of computer code.
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This goes to the core of biological and evolutionary theory.\n\nDNA is elements arranged into nucleic acid molecules, arranged in a code (see first link). This code is directly used by a couple of RNA molecules to build protein molecules, ie enzymes (see link two).\n\nProtein molecules make up most of our body structure themselves, but for other parts (made from other molecules - which are combinations of elements), enzymes are used to arrange the correct structure.
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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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The DNA which carries genetic information in cells is normally packaged in the form of one or more large macromolecules called chromosomes.\n\nA chromosome, from the Greek χρώμα (color) and σώμα (body) is, minimally, a very long, continuous piece of DNA (a single DNA molecule), which contains many genes, regulatory elements and other intervening nucleotide sequences.
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Usual,DNA is double helix (A form).DNA form include: A form, B form,....,Z form.DNA structure :\n base\n phosphast                 -----> nu ---->DNA\n sugar(desoxyrybonucleic)\n You can look at Nobelprizes.org
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Because DNA is identical, and it is the unique genetic code from which we each emerge. With twins - DNA is the same, as are the chromosomes, but the proteins, cells and organs which are transcribed/expressed from that DNA may vary slightly.
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DNA is a polymer of Riboneuleic acid \nThe three parts of a Nucleotide are \n1)Nitrogenous base\n2)Deoxy ribose sugar\n3) phosphate group\n\nFOUR BASES IN DNA ARE\nADENINE \nGUANINE\nTHYMINE\nCYTOSINE\n\nWhat did James Watson and Francis Crick do?\nJames watson and Francis creek presented the DNA STRUCTURE .\n\n  \nThe structure of DNA is described is described as a Double helix model \nnumber six is CGAATGCCTTGACAA\nDNA --RNA\n1)\nDNA stands for deoxyribonucleic acid \nRna Stands for Ribo nucleic Acid\n\n2) DNA IS A DOUBLE HELIX STRUCTURE\n    RNA IS a single strand\n\n3) DNA has thymine\n RNA has uracil \n\n4)  DNA is found only inside NUCLEUS\n    RNA is fpund all over the cell\n\n5)TYPES \nDNA has no types\nRNA has three types\nM RNA         (Messenger RNA)\nT RNa          (Transcription RNA)\nR RNA         (Ribosomal RNA)
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Nucleotide names are abbreviated into standard three- or four-letter codes. The first letter is lower case and indicates whether the Nucleotide in question is a deoxyribonucleotide (denoted by a d) or a ribonucleotide (no letter). The second letter indicates the nucleoside corresponding to the nucleobase:\n\n    G: Guanine\n    A: Adenine\n    T: Thymine\n    C: Cytosine\n    U: Uracil not present in DNA, but takes the place of Thymine in RNA\n\nThe third and fourth letters indicate the length of the attached phosphate chain (Mono-, Di-, Tri-) and the presence of a phosphate (P).
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It's Deoxyribonucleic acid.
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A, B, and Z DNA are the 3 main types which refer to the orientation of the structure of the double-helix, and therefore, the ability of the DNA to express (turn on) genes.\n\nOther designations are gDNA (genomic DNA), also called wtDNA (wild-type DNA) which is DNA as it is found normally in nature.  cDNA is DNA which contains only the exon portions of genes and omite the intron portions.  Introns are the portions of genes which are spliced out once the gene is actually expressed.  The role of introns in genes is not functional and is speculated structural.\n\nIn molecular biology, we use many such working designations to determine the type of DNA we are using.  These help us to define the structure and nature of the form of a gene we are using for research purposes.
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The DNA is linked by the 4 bases G,C,A,T \nG and C pair together and A and T pair together they are held together by hydrogen bonds. G and C have 3 hydrogen bonds A and T have 2.\nThese form the double helix which is the DNA structure.
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DNA is composed of 4 bases: adenine (A), thymine (T), cytosine (C), and guanine (G). Uracil (U), is rarely found in DNA except as a result of chemical degradation of Cytosine, but the DNA of some viruses (notably PBS1 phage DNA) and RNA (Ribonucleic Acid), has Uracil instead of Thymine.\n\nEach base on one strand forms a bond with just one kind of base on another strand, called a "complementary" base: A bonds with T, and C bonds with G. Therefore, the whole double-strand sequence can be described by the sequence on one of the strands, chosen by convention. Two nucleotides paired together are called a base pair.\n\nIn a DNA double helix, two polynucleotide strands can associate through the hydrophobic effect and pi stacking. Which strands associate depends on complementary pairing. Each base forms hydrogen bonds readily to only one other base, 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 temperature required to break the hydrogen bond, its melting temperature (also called Tm value))-.
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It can be linked to a specific person because of the DNA \nin it.