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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)





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


(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 ?
This study examines the aforementioned alternative origins of the hybrid, based on chloroplast rbcL sequences and three nuclear DNA sequences.
It has been reported that majority of couples experiencing RPL are infertile and a large number of couples experiencing assisted and spontaneous conception failure may have underlying sperm factor(s) (sperm mitochondrial and nuclear DNA damage and oxidative stress).
6) Nuclear DNA background and other poorly understood factors may add to the complexity of mitochondrial inheritance.
1990, "Inter- and intraspecific variation of nuclear DNA re-association kinetics in the Gracilaria (Rhodophyta)", J Appl Phycol , 2, pp.
The nuclear DNA content is shown here for the first time for species of the family Sphaeriidae.
We compared purified DNA extracted from mucous and muscle using RAPD, mitochondrial DNA (mtDNA) sequencing, and nuclear DNA sequencing analyses.
The large amount of mitochondrial and nuclear DNA gained in our study demonstrates the feasibility of a thylacine genome project and will revive discussions on the possible resurrection of the animal," contends Stephan Schuster, associate professor of biochemistry and molecular biology at Penn State.
Two low-copy nuclear DNA regions have been particularly successful: Intron 4 of phosphoribulokinase (PRK), a regulatory enzyme of the Calvin cycle for carbon dioxide assimilation, and intron 23 of RNA polymerase li subunit 2 (RPB2), an enzyme complex responsible for DNA transcription of protein-coding genes in all eukaryotes.
Research using nuclear DNA microsatellite loci and mtDNA sequences have shown that many spawning groups of walleye in Lake Erie genetically differ due to spawning site philopatry by both males and females.
The resulting complexes can then bind to regions of the nuclear DNA causing modification of the chromatin and switch on or off the initiation of transcription thus causing changes in gene expression.
The information content of nuclear DNA is vast, about the same as 50 sets of encyclopedias.
Mutations in nuclear DNA and mitochondrial DNA (mtDNA) result in dysfunctional mitochondrial assembly which ultimately leads to reduced ATP production, leading to mitochondrial myopatbies.

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