Tag: "greater" at biology news

Key to Triplet Repeat Brain Diseases Open Door For New Way To Understand, Treat Genetic Diseases"

...netic information to protein inthe brain cell. The greater the number of CAG repeats in the gene, the moreglutamines will be added, resulting in a structurally different proteinthat binds strongly to a particular energy enzyme. As these crucial enzymesbecome disabled, increased numbers of neurons malfunction...

Second Breast Cancer Gene Located

...of families with the BRCA2 gene also seem to be at greater riskfor several other cancers, including male bre...CA2 does not appearto put women at a significantly greater risk of developing ovarian cancer,although the risk is still higher than the general population, the...

Duke Geologists Explore Alternative Way To Measure Ice Age Sea Bottom Temperatures

...million years, which the authors suggest is due to greater influence of bottom currents of colder waters flowing from the south polar region. The ostracod calcium-magnesium records also show changes in bottom temperatures that are consistent with the geological record of glacial cycles as well as with known ...

Dating A Caveman

...ic ratio analysis, this method, too, confirmed the greater age of the finds. The collaboration between Shen and Ku goes back more than a decade, to Shen's research on European caves for his dissertation at the University of Paris. Ku, then taking sabbatical leave from USC as a Fulbright Senior Scholar and Gu...

DNA Techniques Allow Scientists To Become Pollution Detectives.

...t animalswill have different E. coli and will have greater DNA patternsbecause there are more animal species. Humans have fewer DNApatterns." Tamplin and his research team, working with a grant from the U.S.Department of Commerce's National Estuarine Research ReserveSystem, studied pollution at two sites in ...

Core Spins Faster Than Earth, Scientists Find

...hat of the moon,and a mass density almost 13 times greater than the density ofwater. The mass of the inner co...million million tons -- which is about 30 per cent greater thanthe mass of the moon....

Humble Pocket Gophers Shed Light On The Genetic Fortitude Of Cheetahs

...ile mortality, problems with captive breeding, and greater risk of decimation by a virus or other disease. Some field ecologists doubt parts of O'Brien's analysis. They point to apparent weaknesses in the design of the skin-graft experiment; for instance, the researchers used skin from domestic cats as a con...

New Ultrasensitive Technique For Accurately Characterizing Biomolecules Is Developed By Cornell Chemists

...e sample goes into the mass spectrometer, creating greater efficiency. "The achievement really is due to two things: slowing down the flow rate and having one of the highest performing mass spectrometers in the world for protein analysis," said Valaskovic, who received his Cornell Ph.D. last year under Geor...

Study Shows Songbirds Switch From Bugs To Berries To Fuel Fall Migration

...ed diet of fruit andinsects led to a significantly greater weight gain for birds than did astrictly fruit or ...e. For some species, the more fruit in themix, the greater the buildup of fat necessary for a successful migration. Switching from insects to fruit offers migr...

Gene Discovery Could Overcome Aluminum Barrier To Higher Wheat Yields Worldwide

...und the world find rice plants that have genes for greater resistance to zinc deficiency. Sulfides formed in rice paddies make zinc unavailable, which costs farmers million of dollars in lost yields annually. [Contact : Rufus Chaney, <a href="http://hydrolab.arsusda.gov/ecl/Welcome.html">Environment...

Behemoth Animals May Follow Same Extinction Patterns

...e the proboscidean decline is more recent,there is greater possibility of uncovering the complex set of events thatcould bring gigantic animals from glory to extinction....

North America Hit Hard By Asteroid Strike In Yucatan 65 Million Years Ago

...impact, because an oblique impact should release a greater fraction ofimpact energy to the atmosphere and surface target, said Schultz and D'Hondt. "The study also underscores the point that regional repercussions can beexpected from an Earth-object impact, something scientists have rarelyconsidered in previ...

Antarctic Science Season Gears Up With Searches for Meteorites, Neutrinos, and New Life Forms

...rious organisms. Hot and Ultraviolet The greater amount of ultraviolet light (called UV-B) let in by the ozone hole reduces the productivity of marine phytoplankton, but how does UV-B affect Antarctica's terrestrial plants? How are such plants reacting to the 50-year warming trend around the Antar...

Scientists Identify Retrovirus-Like Components In Corn Genome

...out the rest of the genome. In addition to finding greater numbers of mobile DNA segments than expected, the Purdue team discovered that the retrotransposons organize themselves in a unique manner, inserting themselves within each other like nesting dolls, and burrowing between genes rather than inserting in...

Twin Study May Ease Parents' Concerns About Late Talkers, Underscores Impact Of Environment On Language Development

...ates, blood pressure and muscle tension as well as greater pupildilation and higher levels of norepinephrine, a brain chemical producedduring stress. Twin studies are uniquely useful for sorting out the complexinteraction of environment and genetics in language development."Talkative parents provid...

No Such Luck: Nitrogen From Air Pollution Unlikely to Moderate Global Warming

...is a major threat that leads to loss of diversity, greater abundance of non-native species and the disruption of ecosystem functioning -- responses that are tightly linked. "We cannot preserve prairies or maintain the functioning of these and other ecosystems if we continue to pollute them with high rates o...

New Sensor Provides First Instant Test For Toxic E. coli Organism

...coli causes a color change, from blue to red. The greater thecolor change in the sensor, the higher the concentration of 0157:H7 toxin. The color change is instantaneous." Up until now, no technology existed that would allow either food companies, health inspectors, or consumers to determine immedi...

Methane Deep In Ocean Crust Could Feed Chemical-Hungry Microorganisms

...ck has concentrations of methane that are 50 times greater than that measured in the gases from seafloor volcanoes, the places where lava has been able to reach the surface of the seafloor rather than remaining locked below. In addition, Kelley and Gretchen Fruh-Green, a colleague from Zurich, Switzerland,...

Pinpoint Gene Control Holds Promise For Nervous System Studies

...parts. The genetic alteration also leads to a greater than 10-foldincrease in the amount of NGF in the hippocampus, the region ofthe brain where scientists inject the virus. The team hasdetected these elevated levels for as long as they've run theirexperiments -- one year. Brooks and Dr. Federoff are st...

Prostate Cancer May Be Predicted 10 Years Before Diagnosis

...ears before diagnosis, total PSA was significantly greater for men who developed prostate cancer (5.0ng/ml?0.9) compared to men with BPH (2.8ng/ml?0.3) and controls (0.8 ng/ml?0.1.) Free PSA levels were similar among groups at four years before diagnosis. However, the ratio of free to total PSA continuously ...

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