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Tag: "link" at biology news

Certain fish have a special mating preference

...ly important in speciation -- owing to its obvious link to reproduction, which largely defines species boundaries. Evolutionary changes in male genital morphology between populations may result in reproductive incompatibility when populations merge again in the future, resulting in the generation of new s...

IMF Launches World’s First DNA Database for Myeloma Patients

...ly important in speciation -- owing to its obvious link to reproduction, which largely defines species boundaries. Evolutionary changes in male genital morphology between populations may result in reproductive incompatibility when populations merge again in the future, resulting in the generation of new s...

Improved statistical tools reveal many linked loci

...olleagues found that 37% of gene expression traits link to two loci, or positions in the genome. "We were interested in being able to find combinations of genes that affect the phenotype," says Kruglyak. "It's generally thought that most traits of interest have a complex underlying genetic basis, but it'...

Molecular steps involved in the creation of gene-silencing microRNAs identified

...ng messenger RNA. "In this study, we were able to link processing of the miRNAs directly through to the molecules responsible for silencing genes," says Ramin Shiekhattar, Ph.D., an associate professor at Wistar and senior author on both Nature studies. "The miRNAs provide specificity for those molecules...

Genetic links could unlock clues to leading cause of blindness

...y of Florida and German researchers bout a genetic link between rhesus monkeys with macular degeneration and humans could unlock secrets about the earliest stages of the disease, when severe vision loss could still be stopped. The researchers pinpointed a chromosome region and genetic markers for macular...

Achilles heel of the herpes virus possibly found

...f the protein exposed outside of the cell ready to link up with viruses -- or to serve the receptor's "rea... than HSV drug treatment. It could act as a way to link vesicles containing drugs with cells, and deliver them inside". She is currently collaborating with ...

Researchers use 3-D imaging system to unveil swimming behavior of microscopic plankton

...lay a key role in the marine food web as a crucial link between primary producers and predators. The imaging system, Fish TV, uses multibeam sonar to uniquely measure animal movement. The system allowed the researchers to analyze the swimming behavior of more than 375,000 individual zooplankton swimming ...

To translate touch, the brain can quickly rearrange its sense of the body

...g the vibration, suggesting a very strong and fast link between the brain systems for touch and body position. The observations showed that abnormal input into one of the body's sensory systems produced a rapid and profound change in another sensory system: The brain had changed the way it interpreted th...

Discovery of an American salamander where it shouldn't be: Korea

...ionary connection, suggesting some past geographic link between Asia and North America when the world's climate was much warmer, before about 60 million years ago. The closest relative of the Japanese and Chinese giant salamanders is the hellbender of the eastern U.S., for example, while Chinese alligator...

Self-assembled DNA buckyballs for drug delivery

...enes. Under the right conditions, carbon atoms can link up into hexagons and pentagons, which in turn assemble into spherical shapes (technically truncated icosahedrons) resembling the geodesic domes designed by the architect-engineer Buckminster Fuller. Instead of carbon, the Cornell researchers are maki...

How monarch butterflies are wired for navigation

...eye and the creature's circadian clock--a critical link if the butterflies are to compensate for the time of day in using their "sun compass." The researchers' techniques include molecular analysis of butterfly brain proteins, as well as flight tests in which the scientists manipulated the light reaching...

Unraveling a stomach cancer puzzle

...this allows cancer formation, and this mechanistic link is a world-first. Also, the gene differences identified in human stomach cancers are similar to those we would predict if the same thing, Stat3 hyperactivity shutting down TGF, happens in humans. So this is also the first time a connection between st...

Endocannabinoids ?the brain's cannabis ?demonstrate novel modes of action to stress

...stressor. The endogenous cannabinoids may serve to link the stress response with other neuroendocrine functions controlled by the hypothalamus, such as feeding. Di says that the "actions of the endocannabinoids on the synaptic circuits that control the activity of the hypothalamic neurons serve to rapidl...

Scientists focus on 'dwarf eye'

... the eye grows. "The RPE is believed to be the key link in signaling these tissues to stretch," said Sundin. "And MFRP, located exclusively in the RPE and nowhere else in the body, is likely involved in that signaling process." Sundin plans to further investigate MFRP and ultimately develop drugs to reg...

Scientists devise way to measure RNA synthesis on the fly in a live cell

... spectroscopy (FCS), have shown how to monitor the link between RNA synthesis and promoters-small pieces of DNA that turn genes on and off-in a living cell. "Because RNA molecules are intrinsically unstable, it has been extremely challenging to measure and characterize the mode of action of RNA molecules...

Genetic discovery could lead to drought-resistant plants

... gene activity. From their data, they were able to link the gene to plant exhalation. The discovery is another step in understanding how plants respond to their environment. In hot temperatures, plants keep their mouths "shut" longer than usual, to avoid losing gases and water through evaporation. Howeve...

Cultural norms not unique to human societies

... reflect a form of culture and establishes another link between human and chimpanzee societies." The conformity bias finding was an unexpected, but equally important, result of this culture study, according to Dr. Horner. A few members of each group independently discovered the alternative method for fre...

Gene controlling circadian rhythms linked to drug addiction

...or author, said the results suggest there may be a link in disruption of circadian rhythms and the tendency to abuse drugs. "Most work on Clock has focused on the brain's master pacemaker, located in a brain area called the suprachiasmatic nucleus," said Dr. Nestler. "The novelty of Dr. McClung's finding...

Engineered skin offers clues to melanoma development

...ts have not been able to establish a direct causal link between these alterations and human cancer growth. Determining whether these mutations have the potential themselves to induce cancer or simply play a supporting role also has been difficult. To determine the impact of genetic alterations associated...

Ibruprofen and other commonly used painkillers for treating inflammation may increase the risk of heart attack

...ts have not been able to establish a direct causal link between these alterations and human cancer growth. Determining whether these mutations have the potential themselves to induce cancer or simply play a supporting role also has been difficult. To determine the impact of genetic alterations associated...

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