Quantcast

Latest Population genetics Stories

2009-05-17 13:24:00

Reykjavik, ICELAND, May 17 /PRNewswire-FirstCall/ -- In a paper published today in the online edition of Nature Genetics, scientists from deCODE genetics (Nasdaq:DCGN) and academic colleagues from Iceland, Denmark and the Netherlands present the discovery of single letter variations in the sequence of the human genome (SNPs) that influence the age of girls at menarche, the first menstrual period. Age at menarche (AAM) is influenced by both genetic and environmental factors, though the...

2009-04-30 19:20:39

A 10-year study of African population genetics has determined the continent is the most genetically diverse in the world, researchers said Thursday. The team headed by Sara Tishkoff, a geneticist at the University of Pennsylvania, determined that modern humans evolved in southern Africa on the border between Namibia and South Africa. They left the continent by way of East Africa at about the midpoint in the Red Sea. The research team collected data from 14 African populations, four...

5857dda3cce2f5b85dff67a9a61daed01
2009-04-30 14:30:00

An international team of researchers has reported the largest-ever study of genetics in Africa that helps pinpoint where human evolution began. The 10-year study combined efforts from African, American, and European researchers who studied 121 African populations, four African American populations and 60 non-African populations to uncover more than four million genotypes. Teams were looking for patterns of variation at 1327 DNA markers. They discovered that about 71 percent of the African...

2009-04-29 14:15:15

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 Asian population or a number of different populations. Now, after painstakingly comparing DNA samples from people in dozens of modern-day Native American and Eurasian groups, an international team of scientists thinks it can put the matter to rest: Virtually without exception the new...

a6028b95c53b3174ba75c7b0fa92c72b1
2009-04-16 11:00:00

Scientists have discovered a link between two genetic variants and an increased risk of ischemic stroke. The study, which was supported by the National Heart, Lung, and Blood Institute (NHLBI) of the National Institutes of Health, analyzed the genomes of more than 19,000 individuals from the Cohorts for Heart and Aging Research in Genomic Epidemiology (CHARGE) consortium. With more than 150,000 Americans suffering from stroke each year, ischemic strokes are the third leading cause of death in...

2009-04-15 18:01:55

A genetic study suggests inbreeding led to the demise of Spain's powerful Hapsburg dynasty, Spanish scientists said. The Hapsburgs ruled a global empire from 1516 until the death of Spain's King Charles II in 1700. Gonzalo Alvarez of Spain's University of Santiago de Compostela said generations of intermarriage left the king unable to provide an heir, Britain's Daily Telegraph reported Wednesday. The study, published in the journal Public Library of Science, found that nine out of 11 Hapsburg...

fb9f48f9f5889d04bb16722c06ffa59e1
2009-04-15 10:13:22

The powerful Habsburg dynasty ruled Spain and its empire from 1516 to 1700 but when King Charles II died in 1700 without any children from his two marriages, the male line died out and the French Bourbon dynasty came to power in Spain. Reporting in the open-access, peer-reviewed journal PLoS ONE, April 15, Gonzalo Alvarez and colleagues at the University of Santiago de Compostela, Spain, provide genetic evidence to support the historical evidence that the high frequency of inbreeding (mating...

2009-04-07 13:59:26

Scientists say they've found extreme inbreeding of an isolated wolf population at a U.S. island national park has resulted in genetically deformed bones. Michigan Technological University researchers say they've collected the first scientific evidence that inbreeding caused the genetic deterioration of the bones of the wolves at Isle Royale National Park in northern Lake Superior. Rolf Peterson and John Vucetich of Michigan Tech and their colleagues -- Jannikke Raikkonen of the Swedish Museum...

2009-03-31 09:54:18

Ant and bee colonies have long fascinated biologists because of their hierarchical social structure and the apparently altruistic behavior of female workers in rearing the queen's young rather than reproducing themselves. In colonies headed by a single queen, this makes evolutionary sense in that the workers are as closely related to the princesses and princes they nurture as they would be to their own children. Thus the genes underlying this behavior would be successfully transmitted through...

2009-03-30 09:31:34

U.S. researchers say they've determined even a tiny genetic variation can control how quickly and well lungs grow and function in children and adolescents. And the University of Southern California scientists say it also can determine how susceptible children will be to exposure to second-hand tobacco smoke, even in utero. We wanted to determine whether specific gene variations would have measurable and predictable effects on lung function growth and susceptibility to environmental insults,...


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...

More Articles (1 articles) »
Word of the Day
ramage
  • Boughs or branches.
  • Warbling of birds in trees.
Related