News tagged with dna testing
New latent tuberculosis test promises to be cheap and fast
Biomedical engineers at UC Davis have developed a microfluidic chip to test for latent tuberculosis. They hope the test will be cheaper, faster and more reliable than current testing for the disease.
May 22, 2012 |
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In cod we trust: DNA test combats fisheries fraud
Scientists on Tuesday said they had devised a DNA test to pinpoint the geographical origins of commercial seafish, in a breakthrough against illegal trawling that threatens fish stocks worldwide.
May 22, 2012 |
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Researchers create the first artificial neural network out of DNA
Artificial intelligence has been the inspiration for countless books and movies, as well as the aspiration of countless scientists and engineers. Researchers at the California Institute of Technology (Caltech) ...
Jul 20, 2011 |
4.7 / 5 (19) |
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Ancient forest emerges mummified from the Arctic
The northernmost mummified forest ever found in Canada is revealing how plants struggled to endure a long-ago global cooling.
Space & Earth / Earth Sciences
Dec 15, 2010 |
4.3 / 5 (22) |
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Ancient penguin DNA raises doubts about accuracy of genetic dating techniques
Penguins that died 44,000 years ago in Antarctica have provided extraordinary frozen DNA samples that challenge the accuracy of traditional genetic aging measurements, and suggest those approaches have been ...
Nov 10, 2009 |
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Restaurants plan DNA-certified premium seafood
(AP) -- Restaurants around the world will soon use new DNA technology to assure patrons they are being served the genuine fish fillet or caviar they ordered, rather than inferior substitutes, an expert in genetic identification ...
Nov 27, 2011 |
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Ancient Greek ships traded more than just wine
(PhysOrg.com) -- While many historians have assumed that Greek sailors were using amphorae, or ancient storage containers, to transport and trade wine, new DNA testing is providing evidence that these containers ...
Other Sciences / Archaeology & Fossils
Oct 17, 2011 |
4 / 5 (10) |
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Genetic mechanics: First-ever 3-D images of DNA damage sensor create
Everything — from noxious chemicals found in cigarette smoke or car exhaust, to ultraviolet radiation from the sun, to even something as benign as oxygen — is working overtime to damage DNA. Fortunately, ...
Feb 27, 2012 |
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Turtles' mating habits protect against effects of climate change
The mating habits of marine turtle may help to protect them against the effects of climate change, according to new research led by the University of Exeter. Published today in the journal Proceedings of th ...
Jan 24, 2012 |
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New Hope for Deadly Childhood Bone Cancer
(PhysOrg.com) -- Researchers at Huntsman Cancer Institute (HCI) at the University of Utah have shed new light on Ewing’s sarcoma, an often deadly bone cancer that typically afflicts children and young adults. Their research ...
Aug 31, 2009 |
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'Fossil eel' squirms into the record books
A new species of eel found in the gloom of an undersea cave is a "living fossil" astonishingly similar to the first eels that swam some 200 million years ago, biologists reported on Wednesday.
Aug 17, 2011 |
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New biosensor is based on a nanowire crystal array
(PhysOrg.com) -- A quick, inexpensive and highly sensitive test that identifies disease markers or other molecules in low-concentration solutions could be the result of a Cornell-developed nanomechanical biosensor, ...
Nanotechnology / Bio & Medicine
Dec 09, 2011 |
4.5 / 5 (2) |
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Unlisted ingredients in teas and herbal brews revealed in DNA tests by high school students
Take a second look at your iced or steaming tea. Guided by scientific experts, three New York City high school students using tabletop DNA technologies found several herbal brews and a few brands of tea contain ingredients ...
Jul 21, 2011 |
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Study: Mom's blood test can reveal Down syndrome
Scientists in Europe report they were able to diagnose Down syndrome prenatally by giving a simple blood test to pregnant women, an approach that might one day help them avoid the more extensive procedure used now to detect ...
Medicine & Health / Medical research
Mar 06, 2011 |
5 / 5 (9) |
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New DNA research suggests second migration influx of early farmers to Europe
(PhysOrg.com) -- In a paper published in the Proceedings of the National Academy of Sciences (PNAS) a French team led by molecular anthropologist Marie Lacan of Paul Sabatier University documents the results of their DNA ...
Other Sciences / Archaeology & Fossils
Jun 02, 2011 |
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DNA profiling
DNA profiling (also called DNA testing, DNA typing, or genetic fingerprinting) is a technique employed by forensic scientists to assist in the identification of individuals on the basis of their respective DNA profiles. DNA profiles are encrypted sets of numbers that reflect a person's DNA makeup, which can also be used as the person's identifier. DNA profiling should not be confused with full genome sequencing.
Although 99.9% of human DNA sequences are the same in every person, enough of the DNA is different to distinguish one individual from another. DNA profiling uses repetitive ("repeat") sequences that are highly variable, called variable number tandem repeats (VNTR). VNTRs loci are very similar between closely related humans, but so variable that unrelated individuals are extremely unlikely to have the same VNTRs.
The DNA profiling technique was first reported in 1985 by Sir Alec Jeffreys at the University of Leicester in England, and is now the basis of several national DNA databases.
For more information about DNA profiling, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
