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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
Genomic research shows Indians descended from two groups
Sep 23, 2009 |
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(PhysOrg.com) -- In a study published in the September 24th issue of Nature, an international team describes how they harnessed modern genomic technology to explore the ancient history of India, the world' ...
Scientists present first genetic evidence for why placebos work
Jul 20, 2009 |
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usually mere sugar pills designed to represent "no treatment" in a clinical treatment study. The effectiveness of the actual medication is compared with the placebo to determine if the medication works.
Flow of potassium into cells implicated in schizophrenia
May 06, 2009 |
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A study on schizophrenia has implicated machinery that maintains the flow of potassium in cells and revealed a potential molecular target for new treatments. Expression of a previously unknown form of a key ...
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 ...
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.
Mice living in sandy hills quickly evolved lighter coloration
Aug 27, 2009 |
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In a vivid illustration of natural selection at work, scientists at Harvard University have found that deer mice living in Nebraska's Sand Hills quickly evolved lighter coloration after glaciers deposited ...
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 ...
Study: H1N1 flu virus ill-suited for rapid transmission, but new strain bears watching, could mutate
Jul 02, 2009 |
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A team from MIT and the Centers for Disease Control and Prevention has found a genetic explanation for why the new H1N1 "swine flu" virus has spread from person to person less effectively than other flu viruses.
Researchers iron out new role for serotonin
Jan 27, 2009 |
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Vanderbilt University Medical Center investigators have found a surprising link between brain iron levels and serotonin, a neurotransmitter involved in neuropsychiatric conditions ranging from autism to major depression.
New genomic technique uncovers transcriptome of a reef-building coral
May 12, 2009 |
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Using a new technique for cDNA preparation combined with the latest sequencing methods, researchers have uncovered the larval transcriptome of a reef-building coral (Acropora millepora). Their study, descri ...
New tool helps researchers identify DNA patterns of cancer, genetic disorders
May 19, 2009 |
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A new tool will help researchers identify the minute changes in DNA patterns that lead to cancer, Huntington's disease and a host of other genetic disorders. The tool was developed at North Carolina State ...
Genetic variation increases HIV risk in Africans
Biology /
Jul 16, 2008 |
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A genetic variation which evolved to protect people of African descent against malaria has now been shown to increase their susceptibility to HIV infection by up to 40 per cent, according to new research. Conversely, the ...
Genetic variation cues social anxiety in monkeys and humans
Jan 14, 2009 |
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A genetic variation involving the brain chemical serotonin has been found to shape the social behavior of rhesus macaque monkeys, which could provide researchers with a new model for studying autism, social anxiety and schizophrenia. ...
New evidence ties gene to Alzheimer's
Medicine & Health / Neuroscience
May 06, 2009 |
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Of dozens of candidates potentially involved in increasing a person's risk for the most common type of Alzheimer's disease that affects more than 5 million Americans over the age of 65, one gene that keeps grabbing Johns ...
Gene Expression and Splicing Vary Widely from One Tissue to the Next
Biology /
Dec 23, 2008 |
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(PhysOrg.com) -- Genes talk to themselves and to each other to control how a given cell manufactures proteins. But variation in the control of the same gene in two different tissues may contribute to certain human traits, ...
