News tagged with dna analysis
Genetic analysis reveals history, evolution of an ancient delicacy -- morels
Dinosaurs squashed them with impunity. Thousands of species that lacked culinary appreciation have turned up their noses at them. And a study based on advanced DNA analysis has shown that this shameful indifference ...
Mar 03, 2011 |
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Silk moth's antenna inspires new nanotech tool with applications in Alzheimer's research
By mimicking the structure of the silk moth's antenna, University of Michigan researchers led the development of a better nanopore---a tiny tunnel-shaped tool that could advance understanding of a class of ...
Nanotechnology / Bio & Medicine
Feb 28, 2011 |
4.4 / 5 (5) |
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Genome sequenced: Orangutan DNA more diverse than human's, remarkably stable through the ages (w/ Video)
Among great apes, orangutans are humans' most distant cousins. These tree dwellers sport a coat of fine reddish hair and have long been endangered in their native habitats in the rainforests of Sumatra and ...
Jan 26, 2011 |
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AIDS virus lineage much older than previously thought
An ancestor of HIV that infects monkeys is thousands of years older than previously thought, suggesting that HIV, which causes AIDS, is not likely to stop killing humans anytime soon, finds a study by University ...
Medicine & Health / HIV & AIDS
Sep 16, 2010 |
4.8 / 5 (8) |
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Critics cast doubt on recent longevity gene study findings
(PhysOrg.com) -- A recent study of centenarians (reported in PhysOrg on July 1st) that linked a number of gene variants to longevity has now been questioned by other scientists, who suggest a DNA chip known as 610-Quad, used in ...
Jul 09, 2010 |
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Powerful genome barcoding system reveals large-scale variation in human DNA
(PhysOrg.com) -- Genetic abnormalities are most often discussed in terms of differences so miniscule they are actually called "snips" — changes in a single unit along the 3 billion that make up the entire string of human ...
May 31, 2010 |
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Lollipops and Ice Fishing: Molecular Rulers Used to Probe Nanopores
(PhysOrg.com) -- Using a pair of exotic techniques including a molecular-scale version of ice fishing, a team of researchers working at the National Institute of Standards and Technology have developed methods ...
Nanotechnology / Bio & Medicine
Apr 27, 2010 |
5 / 5 (2) |
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Genome analysis of marine microbe reveals a metabolic minimalist
Flightless birds, blind cave shrimp, and other oddities suggest a "use it or lose it" tendency in evolution. In the microbial world, an unusual marine microorganism appears to have ditched several major metabolic pathways, ...
Feb 21, 2010 |
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What drives our genes? Researchers map the first complete human epigenome
Although the human genome sequence faithfully lists (almost) every single DNA base of the roughly 3 billion bases that make up a human genome, it doesn't tell biologists much about how its function is regulated. Now, researchers ...
Oct 14, 2009 |
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Study finds unexpected bacterial diversity on human skin
The health of our skin -- one of the body's first lines of defense against illness and injury — depends upon the delicate balance between our own cells and the millions of bacteria and other one-celled microbes ...
Medicine & Health / Medical research
May 28, 2009 |
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Rapid burst of flowering plants set stage for other species
A new University of Florida study based on DNA analysis from living flowering plants shows that the ancestors of most modern trees diversified extremely rapidly 90 million years ago, ultimately leading to the formation of ...
Other Sciences / Archaeology & Fossils
Feb 09, 2009 |
4.7 / 5 (6) |
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Forensic science used to determine who's who in pre-Columbian Peru
Analysis of ancient mitochondrial DNA (mtDNA) has been used to establish migration and population patterns for American indigenous cultures during the time before Christopher Columbus sailed to the Americas. ...
Apr 23, 2012 |
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Scientists use fossil feathers reveal lineage of extinct, flightless ibis
A remarkable first occurred recently at the Smithsonian's National Museum of Natural History when ornithologists Carla Dove and Storrs Olson used 700- to 1,100-year-old feathers from a long extinct species ...
Other Sciences / Archaeology & Fossils
Nov 22, 2011 |
5 / 5 (3) |
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DNA testing settles 70-year mystery over possible conjoined twins buried at ancient Angel Mounds site
(PhysOrg.com) -- A mystery revealed 70 years ago when archaeologist Glenn A. Black suggested the ancient remains of two infants buried at Southern Indiana's Angel Mounds archaeological site were conjoined ...
Other Sciences / Archaeology & Fossils
Nov 18, 2011 |
3.9 / 5 (8) |
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New creatures from the deep identified
(PhysOrg.com) -- Strange deep sea creatures discovered by Aberdeen researchers have been confirmed as three new species previously unknown to science.
Nov 16, 2011 |
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Genetic testing
Genetic testing allows the genetic diagnosis of vulnerabilities to inherit diseases, and can also be used to determine a person's ancestry. Normally, every person carries two copies of every gene, one inherited from their mother, one inherited from their father. The human genome is believed to contain around 20,000 - 25,000 genes. In addition to studying chromosomes to the level of individual genes, genetic testing in a broader sense includes biochemical tests for the possible presence of genetic diseases, or mutant forms of genes associated with increased risk of developing genetic disorders. Genetic testing identifies changes in chromosomes, genes, or proteins. Most of the time, testing is used to find changes that are associated with inherited disorders. The results of a genetic test can confirm or rule out a suspected genetic condition or help determine a person's chance of developing or passing on a genetic disorder. Several hundred genetic tests are currently in use, and more are being developed.
Since genetic testing may open up ethical or psychological problems, genetic testing is often accompanied by genetic counseling.
For more information about Genetic testing, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
