Printer Friendly
Dictionary, Encyclopedia and Thesaurus - The Free Dictionary
3,904,450,792 visitors served.
forum Join the Word of the Day Mailing List For webmasters
?
Dictionary/
thesaurus
Medical
dictionary
Legal
dictionary
Financial
dictionary
Acronyms
 
Idioms
Encyclopedia
Wikipedia
encyclopedia
?

junk DNA
(redirected from Non-coding DNA)

   Also found in: Medical, Wikipedia 0.01 sec.
junk DNA
n.
DNA that does not code for proteins or their regulation but constitutes approximately 95 percent of the human genome. It is postulated to be involved in the evolution of new genes and possibly in gene repair.

junk DNA
n
(Life Sciences & Allied Applications / Genetics) DNA that consists of repeated sequences of nucleotide and has no apparent function

junk DNA  (jngk)
DNA that serves no known biological purpose, such as coding for proteins or their regulation. Junk DNA makes up the vast majority of the DNA in the cells of most plants and animals, composing, for example, about 95 percent of the human genome.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.junk DNA - stretches of DNA that do not code for genes; "most of the genome consists of junk DNA"
deoxyribonucleic acid, desoxyribonucleic acid, DNA - (biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix; associated with the transmission of genetic information; "DNA is the king of molecules"


Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content.
?Page tools
Printer friendly
Cite / link
Feedback
Add definition
Mentioned in?  References in periodicals archive?   Dictionary browser?   Full browser?
 
But recent evidence suggests that functional genes can emerge from inactive non-coding DNA - also known as "junk" DNA.
Researchers have found genes that arose from non-coding DNA in flies, yeast, and primates.
In fact, organisms simpler than roundworms, such as single-celled bacteria, carry little non-coding DNA and may have no regulatory RNA at all.
 
 
 
Dictionary, Thesaurus, and Translations
?

Terms of Use | Privacy policy | Feedback | Advertise with Us | Copyright © 2012 Farlex, Inc.
Disclaimer
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.