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Tag: "far" at biology news

How nature tinkers with the cellular clock

...emporal regulation also raises the question in how far general conclusions about regulatory systems can be drawn from studying simple model organisms like yeast or fruit flies. ...

Researchers find that bumblebees' flower choice matters

...fact, some of the many different behaviors lead to far more fruitful propagation than others. To under...p at the UWM Field Station in the Cedarburg Bog is far from the sterile laboratory, and the complexity of their experiments becomes immediately evident: Th...

Nice guys do finish first in lizards' evolutionary race

...ange-throated lizards are the big bullies, roaming far from home to raid female territories and mate. They generally beat blue-throated lizards, the stay-at-home dad types. The blues stick close to home to protect females and have a buddy system. One blue-throat will do battle with the orange-throat, ena...

Results with newer bladeless LASIK equivalent to standard microkeratome LASIK

...nvestigator. Given the equivalent findings thus far in eye health and vision between the two types of LASIK, Dr. Patel slightly prefers bladeless LASIK due to its potential safety, which was not measured in his study. "I'd say the short-term outcomes are equal and the risks are, in theory, less with t...

Worm links cancer risk to ageing

...ly, ageing is a huge factor for cancer but have so far struggled to understand why that is. Professor Lithgow said: "If we look at checkpoint proteins as a gear, we have known for a long time that they drive the cancer engine; now we know that they also drive the longevity engine. This discovery has exc...

The brain's motivation station

...oup. The researchers found that the subjects were far more likely to remember high-value scenes than low-value scenes. Importantly, they found that the cues to the high-reward scenes that were later remembered--but not those scenes later forgotten--activated the reward areas of the mesolimbic region as ...

Mutant mice show key autism traits

...ice, found the researchers. For example, they were far less likely to approach and sniff new mice introdu...wed similar preference for the two. Normal mice by far prefer investigating the caged mouse. The researchers also found the mutant mice to be deficient in...

Man may have caused pre-historic extinctions

...om the Pleistocene period. The aim is to provide a far more accurate timetable for the extinction of caballoid horses and mammoths and, ultimately, the cause. "This research is exciting because it throws open the debate as to whether climate change or over-hunting may have led to the extinction of pre-h...

New study reveals structure of E. coli multidrug transporter protein

...ctions raise the cost of medical treatment and are far more expensive than treating normal infections. Treating drug-resistant tuberculosis, for example, requires so-called second-line drugs if standard treatment fails. According to the Centers for Disease Control, second-line drugs can cost as much as "...

New strategy developed to combat West Nile Virus

... with birds that are good carriers. "How fast and far it spreads from there depends on weather, terrain, vegetation, humidity, the types of birds that live in the region and even the number of housing developments in a given area," he added. "These are the variables that need to be studied across the co...

More than drought affecting wheat yields

...d off by producers, Allen said. They came from as far north as Nebraska and as far south as Dallas and the Hill Country, Rush said, making this one of the most widespread years for wh...

Nanotubes used for first time to send signals to nerve cells

...prosthetic devices or biomedical instruments. "As far as I know, we're the first group to show that you can have some kind of electrical communication between these two things, by stimulating cells through our transparent conductive layer," said Todd Pappas, director of sensory and molecular neuroengine...

Where have all the butterflies gone?

...ecies present at this time in an average year, and far fewer individual butterflies than usual. For example, at Gates Canyon near Vacaville he counted 10 species and 43 individuals on April 18, 2006. At the same site on April 19, 2005, he counted 21 species and 378 butterflies. This winter's weather con...

Pollutant haze heats the Arctic

...a surprising new way society's pollutants warm the far north: the Arctic's well-known haze ?made of parti... the Arctic, the pollution source is from industry far away ?mostly from northern Europe and Eurasia." Garrett and Zhao used four years of measurements fr...

Massive duplication of genes may solve Darwin's 'abominable mystery' about flowering plants

... the signs of whole-genome duplication are few and far between: most of the duplicate genes are quickly lost, leaving few obvious traces. Whole-genome duplications have attracted attention as a possible mechanism to drive sudden bursts of evolution, like the one that so vexed Darwin over a century ago. ...

Dragonfly migration resembles that of birds, scientists say

...imilarities as well, whichmakes us wonder just how far back in Earth's history the rules formigration were established in its animals." According to fossil records, dragonflies appeared about 285 millionyears ago, predating the first birds by about 140 million years. Wikelski said that the findings cou...

Corals switch skeleton material as seawater changes

..., he said, the team's work reveals that corals are far more flexible and able to vary at least a portion of their skeleton to growth favored by seawater chemistry. He postulates that this "mineralogical flexibility" provides corals with an "evolutionary advantage," as it would take more energy for corals...

Prion find points way to test for human 'mad cow' disease

...tup company, dubbed "Amprion." "All our effort so far has been to prove the scientific concepts, so we're building this company to go into issues of development, scalability and practicality," Soto said. "We are hopeful that development of this technology into a useful blood test will be a pretty straig...

Joslin discovers signs of residual islet cell function in people with long-term type 1 diabetes

...of type 1 diabetes 57 years. The data collected so far show that individuals who have survived 50 years or more have a greatly reduced risk of nephropathy and retinopathy. ...

DNA to the defense

... size variation we observe in African trypanosomes far exceeds anything reported in other organisms to date," Melville says. "This, coupled with the potential size of the VSG repertoire in these huge subtelomeres suggests an unrivalled capacity for new immune-resistant strains of African trypanosomes....

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