noncoding DNA


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Synonyms for noncoding DNA

sequence of a eukaryotic gene's DNA that is not translated into a protein

References in periodicals archive ?
Years ago, this noncoding DNA was seen as "junk" or evolutionary baggage that may or may not serve any practical purpose.
That project maps stretches of noncoding DNA that are important for switching genes on and off.
Now, a new study offers an unexpected insight: The large majority of noncoding DNA, which is abundant in many living things, may not actually be needed for complex life, according to research set to appear in the journal Nature.
Noncoding DNA does not exist only between genes; the vast majority
We now know that many segments of noncoding DNA (not coding for proteins) contain "RNA-only" genes that can be transcribed into noncoding RNA (ncRNA) molecules but are not translated into proteins.
The sequence analyses of genomes in eukaryotes indicate that simple unicellular organisms, invertebrates and mammals have 10-40%, 70-90% and 98% of their genomes composed of noncoding DNA regions, respectively (34).
In such noncoding DNA segments, changes are assumed mainly to be accidental, without an influence on the phenotype and therefore not subject to selection.
Some might object that this analysis fails to distinguish between the kinds of medically informative DNA-based risk assessments that employers might use to try to avoid potentially costly employees and the molecular typing of noninformative markers in the noncoding DNA that constitutes DNA identification.
Genomics is the study of all of the nucleotide sequences, including structural genes, regulatory sequences, and noncoding DNA segments, in the chromosomes of an organism.
The finding of few sequence polymorphisms in the noncoding DNA of B.
Also promising--though a few years off--is the concept of "DNA vaccination" against allergic disease using immunostimulatory noncoding DNA sequences.
One function of noncoding DNA is the regulation of gene expression, that is, the amount of each protein that is being made from a given gene at any particular time.
Of course, different populations of humans do exist, and if anyone needed proof, in mid-December 2002, Science carried an article reporting current work of the Human Genome Diversity Project that showed that a careful genetic analysis of some 400 noncoding DNA "markers" could distinguish populations according to major geographical regions of the world.
Intron: Noncoding DNA segments within a gene, some of which may help regulate the timing and extent of the gene's expression.
They still don't have the foggiest idea what noncoding DNA is all about.