DNA

(redirected from chromosomal DNA)
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Related to chromosomal DNA: Plasmid DNA, single copy 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 ?
Acinetobacter calcoaceticus liberates chromosomal DNA during induction of competence by cell lysis.
As a result of the work of experts the police were led to two men from the same family whose mitochondrial and Y chromosomal DNA matched the profile of the sample found on the victim and the place where the body was found.
All insertional mutants were used to prepare and digest their chromosomal DNA as indicated above.
Compared to the massive number of genes possessed by chromosomal DNA, the mitochondrial genome includes only a few genes, but they're critically important ones, encoding for the enzyme complexes that generate the ATP fuel.
tuberculosis H37Rv chromosomal DNA as template: a 1166bp fragment spanning from the 3'-end of Rv2627c gene to the 5'-end of Rv2625c gene; anda 1265bp fragment extending from the 3'-end of Rv2625c to the 3' region of the Rv2623c gene.
PCR amplification of TEM and SHV was carried out on plasmid DNA and chromosomal DNA of K.
Expressed sequence tag (EST): A short DNA piece, usually about 200-500 nucleotides, copied from one end of an expressed gene, which is then used as a tag to fish a gene out of a portion of chromosomal DNA by matching the base pair sequence.
of Bayreuth, Germany) presents eight survey papers reviewing various areas in the research of plasmids (extra- chromosomal DNA molecules capable of replicating independently of chromosomal DNA), which he notes presents a "field of research with ramification in synthetic biology, medicine, ecology and evolution as well as basic research in molecular and structural biology.
Fertilisation and Embryology Bill which is going through Parliament to determine whether scientists can use animal eggs - that have had all their chromosomal DNA removed - to make MND cells for research.
Among these clones, BAC End Sequences (BESs) of 20,158 clones with high quality sequences (Phred score [greater than or equal to] 20, average BES equaled 620 bp and totaled 23,585,814 bp), after editing sequencing results by eliminating vector sequences, were used initially to compare sequence homology with the known bovine chromosomal DNA sequence by using BLASTN analysis.
Chromosomal DNA was digested with Sinai (9) and analyzed with a CHEF DR II apparatus (Bio-Rad Laboratories, Hercules, CA, USA).
A study in the 21 December 2005 Journal of the National Cancer Institute now shows a genetic difference between melanoma patients and those with other skin cancers: melanoma patients' chromosomal DNA (chromarin) suffers less damage than other skin cancer patients' when cells are irradiated with ultraviolet B (UVB) light, the part of UV that causes sunburn.