DNA

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Related to Repetitive DNA: satellite DNA

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.

DNA

(biochemistry)

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

DNA

(1) See Windows DNA.

(2) (Digital Network Architecture) Introduced in 1978, it was Digital's umbrella term for its enterprise network architecture based on DECnet.
References in periodicals archive ?
Characterisation of distant Alstroemeria hybrids: application of highly repetitive DNA sequences from A.
Wheat has one of the largest genomes (AABBDD; 2n = 6x = 42; 16 700 Mb/1C) among the plant species largely because of an abundance of repetitive DNA sequences.
Longevity: Bits of simple repetitive DNA sequences at the end of chromosomes (called telomeres), formerly thought to be biological "junk," have been shown to prolong the longevity of cells.
The authors argue that changes in repetitive DNA sequences are often involved in first predisposing a region to allow for alternate epigenetic states and, further, that changes in repetitive sequences ultimately allow an epigenetic change to eventually manifest itself as a change in DNA sequence variation.
This requires cloning highly repetitive DNA, which tends to be unstable," says Cappello, who conducted his postdoctoral training at the Whitehead Institute for Biomedical Research at Massachusetts Institute of Technology, Cambridge.
Garner adds that VBI is concentrating on "the often under-appreciated and difficult computational area of repetitive DNA or microsatellite analysis.
The donor genotype may also lead to variations if components of the plant genome such as repetitive DNA sequences become unstable during the culture process (Lee and Phillips, 1988) and this accounts why some plant genomes are more resistant to somaclonal variations than others.
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.
Dispersed repetitive DNA has spread to new genomes since polyploid formation in cotton.

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