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
Dec 02, 2009 |
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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.
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 ...
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 ...
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 ...
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.
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 ...
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 ...
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 ...
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 ...
Some birds listen, instead of look, for mates
Dec 02, 2009 |
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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.
Study identifies genetic predeterminants for diabetes in African-Americans
Dec 09, 2009 |
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For years, scientists have tried to determine the basis for discrepancies between race and the predisposition for development of diseases such as type II diabetes and cardiovascular disease. Could factors ...
