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Tag: "chance" at biology news

Bigger horns equal better genes

...reater genetic diversity correlates with a greater chance of survival. "The size of the horns reliably advertises the genetic quality of the ibex—and the bigger, the better," said Dr. David Coltman, an evolutionary geneticist at the University of Alberta and co-author of the study, which was published t...

Research shows cord blood comparable to matched bone marrow

...ed that increasing the inventory will increase the chance of finding donors for ethnic and racial minorities currently underrepresented in volunteer marrow registries worldwide. While the study showed that umbilical cord blood took longer to rebuild the blood-making cells in the body, it was associated ...

Physicist cracks women's random but always lucky choice of X chromosome

...ne pool and the resultant population thus has more chance of surviving any biological threat targeted at a single version of the X chromosome....

Genetic factors are linked to fever following smallpox vaccination

...e future by discovering ways to further reduce the chance of minor adverse events.” In an accompanying editorial, James E. Crowe Jr., MD, of Vanderbilt University Medical Center, echoes Dr. Stanley’s sentiments that the findings represent an important preliminary step in understanding the variations in...

Study investigates 'divorce' among Galapagos seabirds

...nderson, professor of biology at Wake Forest. The chance of successfully breeding probably improves as the ...different female the next year, after he has had a chance to regain his condition....

Researchers discover 'acquired' DNA key to certain bacterial infection

...ventions that can prevent, or at least, reduce the chance of infections, though Bermudez cautioned that it is early in the process. “We still don’t know what most of the individual genes do,” he said, “and none of the DNA sequences match those in known databases.” The researchers did discover that one...

Researchers use MRI to predict recovery after spinal cord injury

...ly, the absence of these symptoms indicated a good chance for neurological recovery even if the injury otherwise appeared severe. "Since the severity of spinal cord compression is a predictor of outcome after SCI, this study suggests that MRI may predict which patients would benefit the most from decompr...

First confirmed common genetic risk factors for breast cancer

...reaks and other abnormalities that can result from chance or exposure to an environmental toxin, such as excessive UV sunlight. However, BRCA-1, BRCA-2 and the other previously identified breast cancer susceptibility genes are mutated in a relatively small percentage of women. "Risk mutations within thes...

Want to save polar bears? Follow the ice

...wo continents and one sub-continent stand the best chance of surviving as the polar cap shrinks in size. To that end, the project will utilize remote sensing satellite imagery on sea ice extent and concentration since 1978 to form a picture of polar bear habitat history as well as where this habitat most li...

Statin treatment improves spatial memory in mouse models of Alzheimer's

...o swimming trials in the water maze, giving them a chance to learn how to reach a platform. Food was always available and safety makes taken during the entire trial. On the seventh day the animals were tested for spatial memory, in other words low long it took them to find the platform. The Alzheimer’s m...

Why do oysters choose to live where they could be eaten?

...e a life or death decision when they get their one chance to select where to attach themselves to the bottom," said University of Maryland Center for Environmental Science Chesapeake Biological Laboratory researcher Dr. Mario Tamburri. "Our research shows that oyster larvae are willing to risk predation by ...

Newborn neurons like to hang with the 'in' crowd

...placing already existing connections there is less chance of error," he adds. Neurons make contact via specialized structures called synapses. As a signal traveling along a nerve branch arrives at the pre-synaptic area, it releases a chemical signal. The signaling molecules travel across the synapse and ...

Students invent protective pouch to enhance cell therapy

... Link said he and his team members appreciated the chance to solve a real-world engineering challenge while drawing on the expertise of prominent researchers such as Arepally and Bulte. "I don’t think I could have found an opportunity like this anywhere else," he said. "That’s one of the major strengths of ...

Warts vaccine -- 1 of many in pipeline

...nducting trials in Australia gives Australians the chance to help develop new treatments," Professor Frazer ...t under trial be effective, it also gives them the chance to be amongst the first to benefit." A vaccine would complement both the pap smear program and cu...

Survival of the rarest: Fruit flies shed light on the evolution of behavior

...ally, it suggests that rare variants have a better chance of survival—just as a rare strain of the flu has a better chance of spreading through a population that is already immune to more common strains of the virus. In thi...

Hepatitis E takes a piggyback

...At low infection rates, there is actually a higher chance pigs will pass on HEV to humans at slaughter. Kunio Satou and Hiroshi Nishiura analysed blood test data from 2,500 pigs, natural hosts for the virus, on Japanese farms at Hokkaido, Honshu and Kyushu. They found that by the age of 150 days, over 95% ...

The quest for an effective HIV vaccine presents new possibilities, challenges

...troviral drugs. These vaccines may also reduce the chance that a person infected with HIV would pass the virus on to other people, according to NIAID Director Anthony S. Fauci, M.D., and Margaret I. Johnston, Ph.D., director of NIAID’s Vaccine Research Program in the Division of AIDS. In a review article i...

Do fruit flies have free will?

...f there is free will, it must be somewhere between chance and necessity - which is exactly where fly behavior comes to lie. "The question of whether or not we have free will appears to be posed the wrong way," says Brembs. "Instead, if we ask 'how close to free will are we"' one finds that this is precisely...

Scientists see DNA get 'sunburned' for the first time

...molecule was excited by UV energy, the greater the chance that it would sustain damage. So long-lived excite...ade solely of thymine bases, in order to boost the chance of observing a reaction between adjacent thymines -- and exposed them to UV light. Then they timed t...

Stanford-led study closes in on genes that may predispose some people to severe depression

...School of Medicine. "This finding has a very good chance of leading to a discovery of a gene that could yield important information about why some people develop depression," said Levinson. If problematic genetic variations could be identified, it would open the door to a whole new world of investiga...

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