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
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.
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' ...
Discovery could improve hepatitis C treatment
Sep 23, 2009 |
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Walter and Eliza Hall Institute researchers are part of an international team that has discovered a genetic variation that could identify those people infected with hepatitis C who are most likely to benefit ...
Girl's rare form of diabetes leads to injection-free treatment for some
Sep 23, 2009 |
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Three years after she made medical history and was freed from painful insulin injections, 9-year-old Lilly Jaffe is just beginning to understand how much her story changed the course of diabetes research and treatment.
Gene variation that lets people get by on fewer zees transferred to create insomniac mice
Sep 16, 2009 |
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A University of Utah sleep expert has joined with researchers at the University of California, San Francisco (UCSF), and Stanford University to identify a genetic variation in humans, which the scientists also developed in ...
Understanding the implications of prenatal testing for Down syndrome
Sep 14, 2009 |
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With new prenatal tests for Down syndrome on the horizon promising to be safer, more accurate, and available to women earlier in pregnancy, the medical community must come together and engage in dialogue about the impact ...
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 ...
