DNA

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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 ?
If FISH is performed as described above, you'll likely either see no signal at all when you look in the microscope (because one fluorophore label per target region isn't bright enough for the eye to observe), or else there is a diffuse and meaningless smear of signal over all chromatin (arising from nonspecific weak hybridization of the probe to various repetitive DNA sequences).
Repetitive DNA in bacteria, archaea discovered; later named CRISPRs and found to fight viruses
The fact the telomeres are long stretches of repetitive DNA sequences and also due to the formation of secondary structures, replication can be a challenging event, potentiating loss of telomere integrity.
There are different areas that methylation occurs, including extensive areas of repetitive DNA sequences, such as centromeres and Transposons (Wang, 2004) (which are involved in chromosome stability), non-coding regions (Varambally, 2008) (Enhancer regions, miRNA) and within genes (Guenther, 2007).
Telomeres are repetitive DNA sequences that sit at the ends of chromosomes and serve a protective function to make sure cells do not lose valuable genetic information each time they divide.
p53), repetitive DNA sequences, ribosomal RNA (rRNA), small Interfering RNA (siRNA), small Nuclear RNA (snRNA), transfer RNA, translocation/fusion of genes, gene copy number and others.
The first part addresses mechanisms of evolution in the genus, including host influence, recombination, repetitive DNA sequences, and study of these processes through genomics and transcriptomics.
Birds have much less DNA than mammals primarily because they do not possess nearly as much repetitive DNA," he noted.
After completely sequencing the immensely repetitive DNA in the human genome's one million nucleotide-long immunoglobulin heavy (IGH)-chain locus, these scientists have also found ethnicity may influence immunity.
Another health claim related to venom injections is the supposed effect on telomeres, which are bits of repetitive DNA at the end of chromosomes.
MLVA, which is based on relatively unstable repetitive DNA elements, is sometimes criticized for producing results that are too discriminatory or difficult to reproduce in different settings (6).
A simple method for estimating global DNA methylation using bisulfite PCR of repetitive DNA elements.

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