DNA

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Related to DNA structure: DNA replication
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DNA
A. adenine
T. thymine
C. cytosine
G. guanine

DNA

 (dē′ĕn-ā′)
n.
A nucleic acid that carries the genetic information in cells and some viruses, consisting of two long chains of nucleotides twisted into a double helix and joined by hydrogen bonds between the complementary bases adenine and thymine or cytosine and guanine. DNA sequences are replicated by the cell prior to cell division and may include genes, intergenic spacers, and regions that bind to regulatory proteins.

[d(eoxyribo)n(ucleic) a(cid).]

DNA

n
(Biochemistry) 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. See also genetic code
abbreviation for
did not attend

DNA

deoxyribonucleic acid: an extremely long, double-stranded nucleic acid molecule arranged as a double helix that is the main constituent of the chromosome and that carries the genes as segments along its strands: found chiefly in the chromatin of cells and in many viruses.
[1930–35]
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DNA

(dē′ĕn-ā′)
Short for deoxyribonucleic acid. The nucleic acid that is the genetic material determining the makeup of all living cells and many viruses. It consists of two strands of nucleotides linked together in a structure resembling a ladder twisted into a spiral. In eukaryotic cells, the DNA is contained mainly in the nucleus and mitochondria. DNA can replicate itself and synthesize RNA. Compare RNA. See Note at gene.
Did You Know? One of the wonders of nature is that the complexity and diversity of life can be contained in a molecule with a relatively simple structure. Deoxyribonucleic acid, commonly called DNA, exists mainly in the nucleus and mitochondria of each cell in an organism. It consists of two long strands linked together in a structure resembling a ladder twisted into a spiral, called a double helix. Each rung is made up of two chemical bases, called nucleotides, that are joined together by hydrogen bonds. There are four kinds of nucleotides in a DNA molecule: cytosine, guanine, adenine, and thymine—C, G, A, and T, for short. Specific sequences of these bases, known as genes, form codes that contain all of an organism's genetic information. When other components of a cell "read" this code, they produce proteins, the building blocks of life.

DNA

deoxyribonucleic acid.
See also: Heredity
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.DNA - (biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helixDNA - (biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix; associated with the transmission of genetic information; "DNA is the king of molecules"
cistron, gene, factor - (genetics) a segment of DNA that is involved in producing a polypeptide chain; it can include regions preceding and following the coding DNA as well as introns between the exons; it is considered a unit of heredity; "genes were formerly called factors"
operon - a segment of DNA containing adjacent genes including structural genes and an operator gene and a regulatory gene
biochemistry - the organic chemistry of compounds and processes occurring in organisms; the effort to understand biology within the context of chemistry
base pair - one of the pairs of chemical bases joined by hydrogen bonds that connect the complementary strands of a DNA molecule or of an RNA molecule that has two strands; the base pairs are adenine with thymine and guanine with cytosine in DNA and adenine with uracil and guanine with cytosine in RNA
adenine, A - (biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA
cDNA, complementary DNA - single-stranded DNA that is complementary to messenger RNA or DNA that has been synthesized from messenger RNA by reverse transcriptase
episome - DNA that is not incorporated into the genome but is replicated together with the genome (especially in bacterial cells)
cytosine, C - a base found in DNA and RNA and derived from pyrimidine; pairs with guanine
coding DNA, exon - sequence of a gene's DNA that transcribes into protein structures; "exons are interspersed with introns"
intron, noncoding DNA - sequence of a eukaryotic gene's DNA that is not translated into a protein
junk DNA - stretches of DNA that do not code for genes; "most of the genome consists of junk DNA"
recombinant deoxyribonucleic acid, recombinant DNA - genetically engineered DNA made by recombining fragments of DNA from different organisms
sticky end - an end of DNA in which one strand of the double helix extends a few units beyond the other
jumping gene, transposon - a segment of DNA that can become integrated at many different sites along a chromosome (especially a segment of bacterial DNA that can be translocated as a whole)
guanine, G - a purine base found in DNA and RNA; pairs with cytosine
nucleic acid - (biochemistry) any of various macromolecules composed of nucleotide chains that are vital constituents of all living cells
polymer - a naturally occurring or synthetic compound consisting of large molecules made up of a linked series of repeated simple monomers
T, thymine - a base found in DNA (but not in RNA) and derived from pyrimidine; pairs with adenine
Translations
DNA
DNA
DNA
DNA
DNK
DNA
디옥시리보핵산
DNA
รหัสทางพันธุกรรม
DNA

DNA

A. N ABBR =deoxyribonucleic acidADN m
B. CPD DNA fingerprinting, DNA profiling Nidentificación f mediante el análisis del ADN
DNA testing Npruebas fpl del ADN

DNA

[ˌdiːɛnˈeɪ] (=deoxyribonucleic acid)
nADN m
modif [analysis, database, evidence, profile, sample] → d'ADNDNA fingerprinting nanalyse f de l'empreinte génétiqueDNA sequence nséquence f d'ADNDNA test ntest m ADNDNA testing ntests mpl ADN

DNA

abbr of de(s)oxyribonucleic acidDNS f

DNA

:
DNA fingerprinting, DNA profiling
DNA test
n (Med) → Gentest m
DNA testing
nDNS-Tests pl

DNA

[diːɛnˈeɪ] n abbr =deoxyribonucleic acidDNA m

DNA

الـحِمْضُ النَوَوِيّ DNA DNA DNS DNA ADN DNA ADN DNK DNA DNA 디옥시리보핵산 DNA DNA DNA ADN, DNA ДНК DNA รหัสทางพันธุกรรม DNA DNA 脱氧核糖核酸

DNA

V. deoxyribonucleic acid.
References in periodicals archive ?
Simplified Immunomodulation and DNA Repair Mechanisms enable reprogramming of DNA structure and function, which leads to natural termination of carcinomas and sarcomas as well as various types of drug resistant viruses such as HIV; this overcomes the challenges encountered by ongoing complex cancer research to mapping natural compounds that can act on hundreds of receptor pathways target such as: Notch-1; Notch-2; VEGF; JAK-STAT; HEDGEHOG; IL-1R; EGFR; EGFR2; PDGF.
John Brunstein's "Primer" article in this issue (page 28) include an enigmatic reference: "In the decades immediately following the Watson, Crick (and Franklin) elucidation of the DNA structure.
To think, all these years the secret to DNA structure was right there as we tried to unwind our old phone cords," wrote Scott McCain.
Given that DNA damage can change the structure of DNA within cells, the researchers led by Bess Frost examined changes in DNA structure in tau-induced neurodegeneration.
In science, the second half of the 20th century was marked by the discovery of the DNA structure in 1953, the development of protein sequencing, and the progress in establishing the atomic structures of proteins with x-ray crystallography, the last of which led to elaboration of the vast array of molecular structures.
Had that been the whole of it, there is little doubt that she would have been proclaimed as one of the discoverers of the DNA structure, with all the acclaim, money and influence that would accord.
Genetically modified organisms have been manipulated through genetic engineering by introducing changes into DNA structure.
One of these structures is a four-chain DNA structure called G-quadruplex, which is formed around telomere zone and controls telomerase enzyme.
Thermostressine induces cell ability to resist further stressful aggressions, whereas dGlyage protects DNA structure through innovatively targeting glycation.
It was found that topical application of lycopene suppressed the typical UVB-induced activity of an enzyme called ornithine decarboxylase, an important initiating and rate-controlling factor involved in stabilizing DNA structure in the nucleus of the skin cells as well as maintaining the DNA double strand-break repair pathway.
In his paper, Dr Eastwood of Swansea University's College of Science looked closely at the DNA structure of a certain type of fungus.
YESTERDAY marked 59 years from the date researchers first described DNA structure as a double-helix, and around nine years since the human genome project was all but completed.