DNA

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DNA:

see nucleic acidnucleic acid,
any of a group of organic substances found in the chromosomes of living cells and viruses that play a central role in the storage and replication of hereditary information and in the expression of this information through protein synthesis.
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DNA (deoxyribonucleic acid)

See GENETICS.
Collins Dictionary of Sociology, 3rd ed. © HarperCollins Publishers 2000

DNA

(biochemistry)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

DNA

deoxyribonucleic acid; a nucleic acid that is the main constituent of the chromosomes of all organisms (except some viruses). The DNA molecule consists of two polynucleotide chains in the form of a double helix, containing phosphate and the sugar deoxyribose and linked by hydrogen bonds between the complementary bases adenine and thymine or cytosine and guanine. DNA is self-replicating, plays a central role in protein synthesis, and is responsible for the transmission of hereditary characteristics from parents to offspring
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

DNA

(1) See Windows DNA and DNA storage.

(2) (Digital Network Architecture) Introduced in 1978, the DNA was Digital's umbrella term for its enterprise network architecture based on DECnet. See Digital Equipment.
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References in periodicals archive ?
Destabilization of the DNA double helix in cancer--Mirko Beljanski's theory of carcinogenesis and anti-cancer extracts.
One reference, they say, compares "good evidence to a DNA double helix." Now there's an analogy that's guaranteed to clarify.
"The idea came from the DNA double helix because that is the thing that binds us all together," said the artist.
Watson and Francis Crick, reporting the discovery of the DNA double helix. Most biologists interested in heredity quickly realized that the time had come to think about genetics in terms of macromolecules that carry hereditary information.
Art installations, including an oscillating cable (symbolizing the DNA double helix) hanging between roof and water, and a green 'life-line' on the ground, running through the centre of the courtyard, were separately commissioned.
Martha McClintlock, who has been doing all this research, reckons she's made an amazing breakthrough in relating the tiny and odd world of the DNA double helix to the Bacardi Breezer-sodden arena of the human dating game.
The stability of complexes of NaDNA with bipyridyl-(ethylenediamine)platinum(II) (abbreviated [[(bipy)Pt(en)].sup.2+]) and with netropsin has been studied using two techniques: (i) ultraviolet (UV) melting experiments were done on NaDNA.[[(bipy)Pt(en)].sup.2+], showing that the [[(bipy)Pt(en)].sup.2+] ligand stabilizes the DNA double helix structure; and (ii) swelling measurements (via optical microscopy) as a function of relative humidity were done on wetspun oriented films of NaDNA.[[(bipy)Pt(en)].sup.2+] and of NaDNA.netropsin.
In dividing, the cell unzips the DNA double helix (consisting of two winding strands linked together by matching base pairs) using each strand as a template to direct the formation of its companion strand.
The discovery of the DNA double helix by Francis Crick and James Watson in 1953 confirmed his intuition of a hidden order, encouraging his belief in the transformational power of "nuclear mysticism"--that is, in what he called the vision of matter constantly in the process of dematerialization, of disintegration, thus showing the spirituality of all substance." The paranoiac-critical method was indebted to the surrealist concept.
Speaking at University College, London, the codiscoverer of the DNA double helix said overweight people are happier--and sexier.
An automatic flour dispenser will be shown feeding a DNA double helix mixer and, for the first time, their PLC recipe controller, which provides proportional weighing of flour and tempered water, will be on view, alongside the Mindos system for automated ingredient feed, and their new generation of high pressure glaze sprayers.
He used Watson and Crick's DNA double helix as a model for advertising.