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Native Americans descended from a single ancestral group, DNA study confirms

Native Americans descended from a single ancestral group, DNA study confirms

Biology / Evolution

created Apr 29, 2009 | popularity 4.6 / 5 (16) | comments 2

For two decades, researchers have been using a growing volume of genetic data to debate whether ancestors of Native Americans emigrated to the New World in one wave or successive waves, or from one ancestral ...


Researchers estimate risk of transmission of Huntington's disease to offspring among male carriers

Medicine & Health / Genetics

created Jun 09, 2009 | popularity not rated yet | comments 0

Researchers from Boston University School of Medicine (BUSM) have quantified the probability of a male who carries a "high normal" variant of the Huntington's Disease (HD) gene having a child who develops the disease. Although ...


Genetic marker may predict early onset of prostate cancer

Medicine & Health / Cancer

created May 15, 2009 | popularity 5 / 5 (1) | comments 0

Fox Chase Cancer Center researchers have identified a genetic marker that is associated with an earlier onset of prostate cancer in Caucasian men who have a family history of prostate cancer. If the data are confirmed, the ...


Researchers find first-ever 'wanderlust gene' in tiny bony fish

Researchers find first-ever 'wanderlust gene' in tiny bony fish

Biology / Plants & Animals

created Aug 05, 2009 | popularity 5 / 5 (4) | comments 0

(PhysOrg.com) -- A gene previously associated with physical traits is also dictating behaviour in a tiny fish widely regarded as a living model of Darwin's natural selection theory, according to a University ...


Known genetic risk for Alzheimer's in whites also places blacks at risk

Medicine & Health / Diseases

created Jun 18, 2008 | popularity 5 / 5 (1) | comments 0

A commonly recognized gene that places one at risk for Alzheimer's disease does not discriminate between blacks and whites, according to new research led by Florida State University.


Known Genetic Risk Alzheimer's In Whites Also Places Blacks At Risk

Medicine & Health / Diseases

created Jun 19, 2008 | popularity not rated yet | comments 0

A commonly recognized gene that places one at risk for Alzheimer’s disease does not discriminate between blacks and whites, according to new research led by Florida State University.


'Armored' fish study helps strengthen Darwin's natural selection theory

Biology /

created Aug 28, 2008 | popularity 3.9 / 5 (11) | comments 8

Shedding some genetically induced excess baggage may have helped a tiny fish thrive in freshwater and outsize its marine ancestors, according to a UBC study published today in Science Express.


Gene associated with pair-bonding in animals has similar effects in human males

Medicine & Health / Research

created Sep 02, 2008 | popularity 3.6 / 5 (19) | comments 6

Variation in the gene for one of the receptors for the hormone vasopressin appears to be associated with how human males bond with their partners, according to an international team of researchers.


Mary had a lot of lambs: Researchers identify way to accelerate sheep breeding

Mary had a lot of lambs: Researchers identify way to accelerate sheep breeding

Biology / Plants & Animals

created Aug 06, 2009 | popularity not rated yet | comments 0

(PhysOrg.com) -- Mary had a little lamb, but only once a year. However, Cornell Sheep Program researchers have discovered an unusual form of a gene that prompts ewes to breed out of season as well as conceive ...


Researchers solve another mystery in B lymphocyte development

Medicine & Health / Research

created May 21, 2009 | popularity not rated yet | comments 0

A new study published online in Nature Immunology ahead of the June 2009 print issue has found that homologous immunoglobulin (lg) alleles pair up in the nucleus at stages that coincide with V(D)J recombination of the he ...


Researchers Explore Diabetes, Gene and Cognitive Performance Relationship

Medicine & Health / Research

created Oct 01, 2009 | popularity not rated yet | comments 0

(PhysOrg.com) -- University of Maine researchers studying cardiovascular risk factors that influence cognitive performance have discovered that diabetics who carry a particular genotype — one or more of the ApoE-e4 alleles ...


Culture, not just genes, can drive evolutionary outcomes

Genes drive behaviour, but culture can select genes: study

Biology / Evolution

created Oct 28, 2009 | popularity 4 / 5 (2) | comments 0

Culture, not just genes, can drive evolutionary outcomes, according to a study released Wednesday that compares individualist and group-oriented societies across the globe.


Fat mass and obesity assoicated genes increased risk of disease in Mexican-Americans

Medicine & Health / Research

created Jun 10, 2008 | popularity not rated yet | comments 0

A study from the University of Southern California suggests people of Mexican-American descent who have genetic variants of fat gene FTO and Arachidonate 5-Lipoxygenase (5-LO) had higher triglyceride and lower HDL levels. ...


A polymorphism of the µ-opioid receptor is linked to alcohol misuse among adolescents

Medicine & Health / Health

created Oct 26, 2009 | popularity 4 / 5 (1) | comments 1

A genetic study has examined the association between a polymorphism of the µ-opioid receptor (OPRM1) gene and alcohol misuse among adolescents. Results suggest that teens who carry the G allele (A118G) of the OPRM1 gene are ...


'Culture of we' buffers genetic tendency to depression

Medicine & Health / Psychology & Psychiatry

created Oct 27, 2009 | popularity 4.9 / 5 (16) | comments 14

A genetic tendency to depression is much less likely to be realized in a culture centered on collectivistic rather than individualistic values, according to a new Northwestern University study.