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Tag: "patterns" at biology news

Gap-climbing fruit flies reveal components of goal-driven behaviors

...order to reach a goal, flies compose complex motor patterns from different behavioral subunits. In their genetic analysis, the researchers found mutant flies with defects specifically in deciding whether to cross, another group of mutants performing the correct motor program at a wrong position, and still ano...

Logging changed ecological balance for monkeys, damaged health

...s relationship. We were surprised to find dramatic patterns across the board, where the species of primates do...urbed forest. The researchers also noted that the patterns of forest regeneration in the aftermath of logging appear to be more favorable for colobus monkeys t...

Affymetrix and ParAllele Launch Industry's Most Comprehensive Product Line for Targeted Genotyping

...s relationship. We were surprised to find dramatic patterns across the board, where the species of primates do...urbed forest. The researchers also noted that the patterns of forest regeneration in the aftermath of logging appear to be more favorable for colobus monkeys t...

President Bush's cut to AIDS prevention in Africa would be devastating

...s relationship. We were surprised to find dramatic patterns across the board, where the species of primates do...urbed forest. The researchers also noted that the patterns of forest regeneration in the aftermath of logging appear to be more favorable for colobus monkeys t...

'Shifty-eyed' Monkeys Offer Window Into Brain's Social Reflexes

...tion to determine if social information influences patterns of brain activity there. In future studies, they plan to alter or disrupt neurons or structures in the social-processing regions of the monkeys' brains, and explore whether the resulting behaviors mimic the symptoms of autism. Also, he said, the rese...

Researchers identify new catfish family

...antunia enigmatica appears not to fit any of those patterns and thus the name of the species reflects the mystery surrounding its origins and relationships. The generic name of the fish reflects its distribution in the Río Lacantún drainage, flowing through the Montes Azules and Selva Lacandona Biosphere Res...

Envisat and ERS-2 reveal hidden side of Hurricane Rita

...are what ultimately determine the spiralling cloud patterns that are characteristic of a hurricane. Additional Envisat instruments can be used to take the temperature of the warm ocean waters that power storms during the annual Atlantic hurricane season, along with sea height anomalies related to warm upper...

Lands surface change on Alaska tundra creating longer, warmer summers in Arctic

... be attributed to regional atmospheric circulation patterns or to a reduction in sea ice in the summer or to an increase in cloud cover. The observed summer temperature increases are likely related to a global warming trend that has led to a longer snow-free season and an increase in the extent of woody veget...

Once given 'no respect,' cells' tiny RNAS take driver's seat

...hows that human tumors' microRNA "fingerprints" -- patterns showing which of the more than 200 known microRNAs are more or less abundant than normal -- identify the tumors' tissue of origin much better than other tests. The other paper shows that over-expression of chromosome 13's microRNAs dramatically incre...

Hospitalizations because of chicken pox down dramatically since implementation of vaccine

... and colleagues conducted a study to determine the patterns of hospitalization and ambulatory visits for chicken pox and their associated medical expenditures in the United States, evaluating these factors beginning in 1994 (before availability of varicella vaccine) through 2002 (7 years after vaccine licensu...

Genetics links whale to two different ocean basins

...er, adding to traditional notions of the migratory patterns of these majestic marine mammals in the process, according to researchers from the Wildlife Conservation Society (WCS), the American Museum of Natural History (AMNH), and New York University. In the most recent Royal Society's Biology Letters, a male...

Simple explanation for complex pattern of feather development

...scientist and code-breaker, proposed that repeated patterns could emerge through the interactions among chemical morphogens or molecules that cause things to develop -- an activator that makes things happen, and an inhibitor that suppresses the activator. To test the model in feathers, Harris forced expressi...

Carnegie Mellon cyLab researchers work to develop new red tide monitoring

...atiotemporal data mining extracts changing spatial patterns from continuous data flow. It is a rapidly growing field, which includes inverse physics, machine learning and human-computer interaction," Cai said. ...

New understanding of jet lag

... days to adjust. This results in complex signaling patterns that may adversely affect the functioning of tissues and organs throughout the body for a period of several days. Importantly, the study identifies the neurotransmitter GABA (gamma-aminobutyric acid) as the link between the two clock parts that even...

Single gene is genetic switch for fly sexual behavior

...uitless gene might be involved in other behavioral patterns like aggression. "I think it is going to be fascinating to try to figure out how a fly decides between 'love' and 'war', and what fruitless and the fruitless-expressing neurons have do to with this," he says. Ebru Demir and Barry J. Dickson: "fruitl...

NYU biologists map out early stages of embryo formation

...e diagrams linking all these genes reveal discrete patterns of interconnections, allowing us to begin to visualize the molecular network underlying a complex process like early embryogenesis as a whole." These analyses suggest that out of the almost 20,000 genes in C. elegans, the embryo requires a core set ...

Tropical Deforestation affects rainfall in the U.S. and around the globe

...n in different areas of the globe affects rainfall patterns over a considerable region. Deforestation in the...age of precipitation, but it changes precipitation patterns and distributions by affecting the amount of both sensible heat and that released into the atmospher...

Firefly protein lets researchers monitor molecule linked to cancer

...g to Piwnica-Worms, is that the potential reaction patterns in the NF-KappaB pathway form an hourglass-like shape, fanning out among many options at the start, narrowing in the middle, and again fanning out among many options at the end. "At the waist of that hourglass is IKK," he explains. "This appears to ...

New technology shows our ancestors ate…everything!

...e hard, brittle foods. But they also revealed wear patterns suggesting that both species had variable diets. "This new information implies that early humans evolved and altered their diet according to seasonal and other changes in order to survive," said Mark Teaford, Ph.D., professor of functional anatomy an...

Metal-containing compounds show promise as HIV weapon

...e crystals are bombarded with X-rays, and then the patterns made when the component atoms deflect the rays are deciphered. The metallacarboranes appeared to occupy the portion of the protease used to hold key proteins in place as part of the infective cycle of HIV, preventing the proteases from working. Ot...

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