As shown in figure 3, adenine forms a base pair with thymine, and guanine forms a base pair with cytosine. The interaction between two bases on opposite strands via hydrogen bonds is called base pairing. It is the sequence of these four bases that encode genetic information. The bases interact via hydrogen bonds with complementary bases on the other DNA strand in the helix. The four bases are adenine (A), cytosine (C), guanine (G) and thymine (T). The sugar and phosphate create a backbone down either side of the double helix. Did Not Attack (Dana Carvey) showing only Slang/Internet Slang definitions ( show all 69 definitions) Note: We have 250 other definitions for DNA in our Acronym Attic. Douglas Noel Adams (late British author of the Hitchhikers Guide to the Galaxy series) DNA. It is present in all forms of life on earth and contains each organism. National Dyslexia Association (humor) DNA.
Nucleotides have three components: a base, a sugar (deoxyribose) and a phosphate residue. DNA is a biological molecule that contains the instructions an organism needs to develop, survive, and reproduce. The monomers of DNA are called nucleotides.
T IN DNA STANDS FOR CODE
Some DNA sequences do not code for genes and have structural roles (for example, in the structure of chromosomes), or are involved in regulating the use of the genetic information for example, repressor sites are DNA sequences that allow binding of a repressor, which stops the process of gene expression.ĭNA consists of two long polymers (called strands) that run in opposite directions and form the regular geometry of the double helix. Genes are the DNA segments that carry genetic information (1). The two nucleotide strands are actually twisted around each other giving. Therefore, DNA is an essential component of independently living organisms. A (Adenine) always pairs with T (Thymine) C (Cytosine) always pairs with G (Guanine). DNA sequences have been described which use newly created nucleobases to form a third base pair, in addition to the two base pairs found in nature, A-T (adenine. Genetic information is encoded in deoxyribonucleic acid (DNA) molecules.
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