Daily non-political popular news in brief.
Study of bear hair will reveal genetic diversity of Yellowstone's grizzlies
12-18-2007 · EurekAlert!Montana State University's library of 400 grizzly bear hair samples will be analyzed to determine the genetic diversity of the Greater Yellowstone Ecosystem population. The study will also determine if bears from the Northern Continental Divide Ecosystem are adding their genetic diversity to the Yellowstone group.
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Keywords: study, bear, hair, reveal, genetic, diversity, yellowstone, grizzlies, grizzly
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- Biological invasions can begin with just 1 insect
09-11-2007 · EurekAlert!
A new study by York University biologists Amro Zayed and Laurence Packer has shown that a lone insect can initiate a biological invasion. Zayed, a recent graduate of Packer's lab, examined patterns of genetic diversity in both native European and invasive North American populations of a solitary bee. He concluded that the invasion was most likely founded by one mated female. The study is published in the open-access journal PLoS ONE.
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- Genetic diversity of European Americans and disease gene mapping
01-17-2008 · EurekAlert!
In a recent study, published in the open-access journal PLoS Genetics, an international team of researchers provide the first genetic dissection of the population structure of European Americans, focusing on identifying the contributions from different genetic ancestries that are important for disease gene mapping.
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- Artificial skin system can heal wounds
12-20-2007 · EurekAlert!
A new study in Artificial Organs tested the effects of a wound dressing created with hair follicular cells. The findings reveal that skin substitutes using living hair cells can increase wound healing.
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- Grizzly bears feast on diverse diet
02-14-2007 · EurekAlert!
There's no such thing as picky grizzly bears -- they'll eat almost anything they can find. A new University of Alberta study that tracked food habits of the Alberta grizzly bear living in the foothills sheds some light on the animal's varied diet and their activity pattern.
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- Bigger horns equal better genes
06-05-2007 · EurekAlert!
According to a team of international researchers, mature, male alpine ibex demonstrate a correlation between horn growth and genetic diversity. The researchers believe their study offers evidence to support the mutation accumulation theory of ageing, which is the idea that, because natural selection weakens with age, genetic mutations have effects that accumulate over time.
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- Researchers reveal genetic secrets of devastating human parasite
09-20-2007 · EurekAlert!
An international team of researchers has revealed the genetic secrets of one of the world's most debilitating human parasites, Brugia malayi, which the World Health Organization estimates has seriously incapacitated and disfigured more than 40 million people around the globe. The study reveals dozens of potential new targets for drugs or vaccines and should provide new opportunities for understanding, treating and preventing elephantiasis, the disfiguring disease caused by the Brugia malayi parasite.
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- A unique twin study on the increased cardiometabolic risk in obesity
02-13-2007 · EurekAlert!
A unique monozygotic twin study by Finnish researchers found that obesity, already in its early stages and independent of genetic influences, is associated with deleterious alterations in the lipid metabolism known to facilitate atherogenesis, inflammation and insulin resistance. By studying monozygotic twins discordant for obesity the research group was able to eliminate effects caused by genetic differences related to obesity and reveal effects attributable to environmental and life-style differences.
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- Global climate change: The impact of El Niño on Galápagos marine iguanas
12-11-2007 · EurekAlert!
A before-and-after study led by Yale biologists, of the effects of 1997 El Niño on the genetic diversity of marine iguanas on the Galápagos Islands, emphasizes the importance of studying populations over time and the need to determine which environmental and biological factors make specific populations more vulnerable than others.
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- 'Star Trek'-type scanning may reveal genetic activity of tumors, Stanford study shows
05-21-2007 · EurekAlert!
Peering into the body and visualizing its molecular secrets, once the stuff of science fiction, is one step closer to reality with a study from researchers at the Stanford University School of Medicine and the University of California, San Diego School of Medicine.
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- How red blood cells nuke their nuclei
02-10-2008 · EurekAlert!
Late in their development, mammalian red blood cells lose their nuclei when a ring of actin filaments contracts and pinches off a segment of the cell that mainly contains the nucleus. Relevance: This is the first study to reveal the proteins involved as a red blood cell loses its nucleus. The researchers plan to further investigate the entire process of red blood cell formation, which may lead to insights about genetic alterations that underlie certain red blood cell disorders.
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