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Tag: "behind" at biology news

New light microscope sharpens scientists' focus

...ey developed the microscope. The basic concepts behind their new technique are simple: The researchers label the molecules they want to study with a photoactivatable probe, and then expose those molecules to a small amount of violet light. The light activates fluorescence in a small percentage of molecul...

UGA researchers find that hunting can increase the severity of wildlife disease epidemics

... are contrary to what you expect." The reasoning behind killing wild animals to control disease outbreaks is simple: fewer animals should result in reduced transmission of disease. Hunting has been used to control badger populations in England, rabies in European foxes and chronic wasting disease in deer ...

Researchers offer clues to how leaves patterns are formed

...s have tried to decipher the rules and regulations behind those varied designs and now new research published in part at the University of Alberta offers a big clue to how those patterns are formed. "For years people have been trying to understand this beautiful formation," said Dr. Enrico Scarpella, from...

The shape of life: research sheds light on how cells take shape

...on of life. Now we really understand the mechanism behind this type of pattern in microtubules. Force is the key." ...

Federal testing for mad cow disease a failure, law review editor says

...ication between the two agencies. "The FDA is far behind on inspecting feed businesses subject to the feed ban, has no uniform plan to identify feed businesses, has no routine procedure for testing of cattle feed, does not require a notice about the ban to be placed on feed, and has repeatedly failed to no...

Science captures the essence of fruit

...stood for many years, science has generally lagged behind in identifying which genes are needed to produce the desired outcome. HortResearch has now overcome this issue by using research initially intended to speed up the process of fruit breeding, says Dr Newcomb. "Through decades of fruit breeding resea...

Ring-like formations in drying DNA drops could affect hybridization studies

...g drops of DNA. To gain insights into the physics behind the ring phenomenon, Wong's team experimentally studied the dynamics of drying DNA droplets on glass surfaces. They report their findings in a paper accepted for publication in the journal Physical Review Letters, and posted on its Web site. "As the...

Species unique to tidal marshes face threats

...long coasts that are protected within estuaries or behind barrier islands. They are most common in North America and China. Some tidal marsh species are protected from high salinity by relatively impermeable skin, and others have kidneys that can concentrate salts from large volumes of water or specialized ...

Scientists describe new African monkey genus ?first in 83 years

...animals. Worldwide collaboration The research behind the new findings was remarkably collaborative, drawing on the expertise of a team of scientists spread around the world. Davenport, the lead author, Daniela De Luca, Noah Mpunga and Sophy Machaga, also co-authors, work for the Wildlife Conservation S...

Bacteria have their own immune system protecting against outside DNA

...oteins are purified out from the bacteria, leaving behind only the useful protein. However, in that process, the yield of some human proteins produced in bacteria can be low. The new research indicates that the H-NS "immune system" may be responsible for interfering with the expression of human genes in bac...

Fertility hope as study shows eggs survive in older ovaries

...oocytes, Professor Findlay said. "The mechanism behind renewable oocytes is still unknown," he said. "Although other scientists have suggested that the new eggs come from stem cells in the bone marrow or the ovary, we really don't know and further experimentation is needed to find out." Dr Kerr said the...

Researchers find protein that silences genes

...living cells. They also found that the mechanism behind the silencing involves both modifications of histones and changes in DNA methylation, and that HDA6 affects both. Circular pathway to silence "Somehow these modifications are linked together," Pikaard said. "We know that they work together and t...

Fire ants: Their true story told by the scientist who loves them

... Tallahassee ?to area strip malls. The parking lot behind a local grocery store is a particular favorite. "Fire ants specialize in exploiting disturbed habitat, and they've thrived in part because humans have done a lot of disturbing," he said. Other fun facts center on the familiar dirt mound around whic...

Eminent inventor of DNA fingerprinting gains new recognition

...d? Whose blood, sweat, hair or sperm has been left behind at the scene of a crime? Who is this tsunami victim? Are these bones truly the remains of the last Czar of Russia? Jeffreys' technique was even able to tell us whether Dolly was in fact the clone of another sheep. "The new discipline of forensic mol...

Mother birds give a nutritional leg up to chicks with unattractive fathers

...ay. Providing new insight into the strategic basis behind resource allocation in eggs, the researchers found that female house finches deposit significantly more antioxidants, which protect the embryo during the developmental process, into eggs sired by less attractive fathers. "For female birds, an impor...

Cougar predation key to ecosystem health

...er, the researchers said, that the ultimate driver behind all of these changes is humans ?in the case of Zion Canyon, simply by their presence. That canyon receives nearly three million human visitors a year, the adjacent North Creek a stray handful of hikers. Cougars in Zion Canyon were not intentionally k...

Jefferson researchers uncover new way nature turns genes on and off

...esearchers found that one of the likely mechanisms behind ncRNAs' ability to regulate essential coding genes is through a "transcription interference" mechanism. "Such mechanisms are known in bacteria and yeast, but not much is known in higher organisms," he explains. In the fruit fly, HOX gene activity i...

Incidence of stroke decreases over last 50 years

...ted States. It is the third leading cause of death behind heart disease and cancer and the leading neurologic cause of long-term disability, according to background information in the article. Prior estimates of long-term trends in the incidence and severity of stroke have varied. Determining trends could h...

Far more than a meteor killed dinos

...ly, since dinosaurs did not leave a lot of fossils behind to tell the tale. "Dinosaur fossils are few and far between," Keller said. "People love the dinosaurs but we can only really study what happened to them by looking at microfossils because these little critters are everywhere at all times. In just ...

'Fruit fly dating game' provides clues to our reproductive prowess

...ly, since dinosaurs did not leave a lot of fossils behind to tell the tale. "Dinosaur fossils are few and far between," Keller said. "People love the dinosaurs but we can only really study what happened to them by looking at microfossils because these little critters are everywhere at all times. In just ...

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