Genetic variation
hideGenetic variation, variation in alleles of genes, occurs both within and among populations. Genetic variation is important because it provides the “raw material” for natural selection.
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News tagged with genetic variation
Gene Testing In the Doctors Office
Nanotechnology / Bio & Medicine
11 hours ago |
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(PhysOrg.com) -- A portable instrument manufactured by Nanosphere Inc. and recently approved by the FDA, can detect genetic variations in blood that alter the effectiveness of some drugs.
Some birds listen, instead of look, for mates
16 hours ago |
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Looks can be deceiving, but certain bird species have figured out that a voice can tell them most of what they need to know to find the right mate.
Heart failure linked to gene variant affecting vitamin D activation
Dec 01, 2009 |
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Previous studies have shown a link between low vitamin D status and heart disease. Now a new study shows that patients with high blood pressure who possess a gene variant that affects an enzyme critical to normal vitamin ...
First 'genetic map' of Han Chinese may aid search for disease susceptibility genes
Nov 25, 2009 |
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The first genetic historical map of the Han Chinese, the largest ethnic population in the world, as they migrated from south to north over evolutionary time. was published online today by the American Journal of Human Ge ...
Against expectations, genetic variation does not alter asthma treatment response
Nov 24, 2009 |
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(PhysOrg.com) -- Studies have suggested that asthma patients with a specific genetic variation might not respond as well to certain treatments as those with a different variation. But a new study in this week's edition of ...
Racial disparity in colon cancer survival not easily explained, researchers say (w/ Video)
Nov 23, 2009 |
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A new study by University of Alabama at Birmingham (UAB) researchers shows that body-mass index (BMI) and co-existing medical conditions (co-morbidity) do not explain the decreased survival observed among African-Americans ...
Study looks at scientific, cultural perspectives on race
Nov 17, 2009 |
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(PhysOrg.com) -- A new study compares personal perceptions of race, color and ancestry of Brazilian high school students with the results of genetic ancestry tests, with the aim of investigating the tensions between cultural ...
Genetic link to vitamin A deficiency
Nov 17, 2009 |
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(PhysOrg.com) -- Almost half of UK women may be lacking an important source of vitamin A due to a previously undiscovered genetic variation, scientists at Newcastle University have found.
Researchers Identify Gene Mutations Underlying Risk for Most Common Form of Parkinson's Disease
Nov 17, 2009 |
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(PhysOrg.com) -- Two genes containing mutations known to cause rare familial forms of parkinsonism are also associated with the more common, sporadic form of the disease where there is no family history, researchers have ...
Study links genetic variation to individual empathy, stress levels
Medicine & Health / Psychology & Psychiatry
Nov 16, 2009 |
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Researchers have discovered a genetic variation that may contribute to how empathetic a human is, and how that person reacts to stress. In the first study of its kind, a variation in the hormone/neurotransmitter oxytocin's ...
Why do human populations differ? Fruit fly study aims to provide genetic answers
Oct 13, 2009 |
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(PhysOrg.com) -- Charles Aquadro, professor of molecular biology and genetics, researches how fruit flies provide clues to humans' own genetic footprints of adaptation.
Common Gene Mutation Linked to Statin Side Effects
Oct 13, 2009 |
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(PhysOrg.com) -- Common genetic mutations may help explain why some people develop side effects that lead to discontinuing the use of cholesterol-lowering statins. Duke University Medical Center researchers who identified ...
Blood counts are clues to human disease
Oct 11, 2009 |
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(PhysOrg.com) -- A new genome-wide association study published today in Nature Genetics begins to uncover the basis of genetic variations in eight blood measurements and the impact those variants can have o ...
Jumping genes, gene loss and genome dark matter
Oct 07, 2009 |
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In research published today by Nature, an international team describes the finest map of changes to the structure of human genomes and a resource they have developed for researchers worldwide to look at the ...
Genetic variation of enzyme linked with outcomes for women receiving tamoxifen
Oct 06, 2009 |
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Among women with early stage breast cancer, genetic variation of a certain enzyme appears to be associated with clinical outcomes for women treated with tamoxifen, according to a study in the October 7 issue of JAMA.
