copy DNA

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complementary DNA (cDNA) (copy DNA (cDNA)) synthetic DNA transcribed from a specific RNA through the reaction of the enzyme reverse transcriptase.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

copy DNA


complementary DNA

a DNA molecule obtained in vitro from an RNA (usually eukaryotic mRNA) TEMPLATE, using the ENZYME REVERSE TRANSCRIPTASE. The DNA strand (cDNA) is complementary to the RNA. The RNA is removed after cDNA synthesis and the second cDNA strand is then synthesized using the enzyme DNA POLYMERASE to generate double-stranded DNA. cDNA thus represents double-stranded DNA copies of transcribed regions of a genome and, if using mature mRNA as template, will lack any INTRONS associated with the genomic region.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
The detective inspector said a low copy DNA sample taken from one of the men in the car partially matched the sample found at the murder scene.
Low copy DNA testing is a highly sensitive technique used to test DNA samples 1,000 times smaller than a grain of salt.
When a PCR experiment is completed, over a million copies of the original DNA of interest have been obtained as complementary or copy DNA (cDNA).
Beese and her colleagues also plan to photograph their polymerase as it tries to copy DNA attached to known chemical carcinogens.
Bacteria have always been important tools for creators of DNA vaccines, but researchers have normally used the microbes as a simple way to copy DNA, not as a method of delivering it into the body.