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Latest Population genetics Stories

2010-04-29 14:39:00

-- New Approach Also Specifies Results for Individual Patients -- PHILADELPHIA, April 29 /PRNewswire-USNewswire/ -- In findings that may speed the search for disease-causing genes, a new study challenges the prevailing view that common diseases are usually caused by common gene variants (mutations). Instead, say genetics researchers, the culprits may be numerous rare variants, located in DNA sequences farther away from the original "hot spots" than scientists have been accustomed to look....

2010-04-06 07:16:03

Agronomists at Iowa State University are offering doubled haploid technology that allows corn breeders to more quickly produce inbred lines for research or private use. Thomas Lbberstedt, associate professor and K.J. Frey chair in agronomy and director of the R.F. Baker Center for Plant Breeding, has launched a Doubled Haploid Facility at ISU that can develop pure, inbred corn lines in less time than traditional methods. Inbred corn lines have two copies of the same genome. They are sometimes...

2010-03-23 09:44:16

Grapes are one of the world's most economically important fruit crops, but the woody perennial takes three years to go from seed to fruit, and that makes traditional breeding expensive and time-consuming. A team of Agricultural Research Service (ARS) researchers has found a way to speed things up by developing a way to identify genetic markers in the grapevine's genome that can be linked with specific traits, such as fruit quality, environmental adaptation, and disease and pest resistance....

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2010-03-18 09:35:34

In the ongoing quest to identify the genetic factors involved in disease, scientists have increasingly turned to genome-wide association studies, or GWAS, which enable the scanning of up to a million genetic markers in thousands of individuals. These studies generally compare the frequency of genetic variants between two groups "” those with a particular disease and healthy individuals. Differences in the frequency of a given variant suggest the variant may be involved in the disease....

2010-03-01 15:46:48

Alcohol dependence (AD) is a complex disease for which both genetic and environmental factors affect susceptibility. Previous research had identified several genes associated with AD through linkage analysis or candidate-gene approaches. Findings from a genome-wide association study (GWAS) support an association between AD and a cluster of genes on chromosome 11. Results will be published in the May 2010 issue of Alcoholism: Clinical & Experimental Research and are currently available at...

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2010-02-19 14:55:00

A few minor variations in one gene may make a difference in athletic endurance, according to a new study from Physiological Genomics. The study found that elite endurance athletes were more likely to have variations of the NRF2 gene than elite sprinters. Non-elite endurance athletes were also more likely to have the genetic variations compared to sprinters, although the difference was not as pronounced. The study shows an association between the gene variation and endurance, but does not...

2010-02-19 13:57:32

Viruses have played a role in shaping human genetic variability, according to a study published February 19 in the open-access journal PLoS Genetics. The researchers, from the Don C. Gnocchi and Eugenio Medea Scientific Institutes, the University of Milan and the Politecnico di Milano, Italy, used population genetics approaches to identify gene variants that augment susceptibility to viral infections or protect from such infections. Viruses have represented a threat to human populations...

2010-02-17 14:07:53

The unexpected discovery of a new type of genetic variation suggests that natural selection "“ the force that drives evolution "“ is both more powerful and more complex than scientists have thought. "We have discovered that natural selection can act not only on whole organisms and individual genes, but also on gene networks," says Antonis Rokas, assistant professor of biological sciences at Vanderbilt University and senior author of the paper reporting the discovery that was...

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2010-02-05 07:25:00

The father of evolution, Charles Darwin, who hypothesized that all humans evolved from common ancestors, was a direct descendant of the Cro-Magnon people, researchers reported on Thursday. The scientists said that Darwin came from Haplogroup R1b, one of the most common European male lineages. "Men belonging to Haplogroup R1b are direct descendants of the Cro-Magnon people who, beginning 30,000 years ago, dominated the human expansion into Europe and heralded the demise of the Neanderthal...

2010-02-04 14:38:11

Study finds association between genes that regulate maternal inflammatory response, bacterial vaginosis and preterm delivery In a study to be presented today at the Society for Maternal-Fetal Medicine's (SMFM) annual meeting, The Pregnancy Meeting â“ž¢, in Chicago, researchers will show the use of haplotype tagging (hap-tag) single-nucleotide polymorphisms (SNPs) to study the relationship between genetic predispositions, an environmental factor - bacterial...


Latest Population genetics Reference Libraries

House Mouse, Mus musculus
2012-05-01 11:42:07

Even in the wild, this rodent is associated with humans by destroying crops and stored food. The house mouse is also known as the fancy mouse, a common pet. It is also a widely used laboratory animal, important for testing in genetics, biology, and medicine. There are three recognized subspecies of the house mouse. These mice thrive in a number of locations including fields, houses, and commercial structures. An adult male house mouse can have a body length of up to 3.9 in, and tail length...

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