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Tag: "modern" at biology news

Small molecule interactions were central to the origin of life

...prebiotic" syntheses carried out by chemists using modern apparatus and purified reagents, are highly unlikely. The creation of a molecule that can self-replicate requires the combination of diverse chemicals in a long sequence of reactions in a specific order, interspersed by complicated separations, purif...

Scientists reverse evolution

...ion-year-old gene by combining key portions of two modern mouse genes that descended from the archaic gene. ...nt gene. ?We have proven that from two specialized modern genes, we can reconstruct the ancient gene they split off from. It illuminates the mechanisms and pr...

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

...vern it are far from clear. Alan Turing, father of modern computer science, suggested that the basis for pattern formation was chemical. New research conducted at Brown University and published in the Proceedings of the National Academy of Sciences supplies another surprising answer: Physical, as well as ch...

Large dinosaurs were extremely hot in their day, UF study finds

...in body temperature with size has been observed in modern crocodiles. "The study is an important contribution to the scientific discussion about dinosaurs, because it is the first that uses evidence directly derived from fossils -- rather than from theoretical models -- to conclude that many of the larger...

Snakes' virtual glasses, leopard spots and all-optical transistors

...s Turing pattern morphogens the "Just So Story" of modern biology. Still, the researchers are encouraged by the fact that their model easily accounts for the big cats' complex and changing patterns, and are hopeful that experimentalists will soon track morphogen chemicals down. An All-Optical Transist...

Hopkins scientists show hallucinogen in mushrooms creates universal 'mystical' experience

...pology-and what we believe we can understand using modern clinical pharmacology techniques," says study leader Roland Griffiths, Ph.D., a professor with Hopkins' departments of Neuroscience and Psychiatry and Behavioral Biology. "That gap is large because, as a reaction to the excesses of the 1960s, human r...

Corals switch skeleton material as seawater changes

.... Ries spent two months growing three species of modern scleractinian corals (the major reef-building cora...e calcite mineral, while those grown in unmodified modern seawater produced exclusively the aragonite mineral. Though most scientists believed that corals we...

Evolutionary forces explain why women live longer than men

Despite research efforts to find modern factors that would explain the different life expe...age or engaging in physical sparring. And even in modern life, where most dueling is a form of entertainment, male behavior and physiology is shortening thei...

A rice future for Asia

...der a future in rice. "It's a sad fact of life in modern Asia that many young people in the region don't think of rice as offering an exciting or promising career, so they focus on other industries and other careers," says Robert S. Zeigler, director general of the Philippines-based International Rice Rese...

Eminent inventor of DNA fingerprinting gains new recognition

...ster The Department of Genetics is accommodated in modern laboratories provided with all the facilities necessary for fundamental research and training in genetics. It is one of the largest Departments of Genetics in the United Kingdom and was rated at a Grade 5* in the 2001 national research assessment exe...

Man may have caused pre-historic extinctions

...on of the northern hemisphere and the evolution of modern man around 100,000 years ago. It is known that the end of the Pleistocene period was a time of large-scale extinctions of animals and plants in North America and elsewhere but the factors responsible have remained open to question, with climate cha...

Tamed 11,400 years ago, figs were likely first domesticated crop

...lgal. The scientists compared the ancient figs to modern wild and domesticated variants and determined that they were a mutant selectively propagated by humans. In this variety of fig, known as parthenocarpic, the fruit develops without insect pollination and is prevented from falling off the tree, allowin...

Finding the right mix: A biomaterial blend library

... become big business. But scientists pursuing this modern medical revolution share a basic challenge: biocompatibility. How will a biomaterial on the lab bench actually work inside the human body? Will a patient accept the new material or suffer an inflammatory response? And can that material survive in a h...

Trotting with emus to walk with dinosaurs

...nd have similar feet, emus turn out to be the best modern version of the enigmatic reptiles that once trotte... the dinosaurs were doing, they went hunting for a modern analog animal they could study to help decipher the tracks. Large flightless birds are the most ...

Better sludge through metagenomics

..., wastewater treatment--one of the cornerstones of modern civilization--is the largest microbially-mediated biotechnology process on the planet. When it works, it is a microbial symphony in tune with humanity. When it fails, the consequences can be dire. Researchers from the U.S. Department of Energy Joi...

Mayo Clinic collaboration mining of ancient herbal text leads to potential new anti-bacterial drug

...sights from traditional medicine really may impact modern public health," explains Brent Bauer, M.D., direct...on of Atun kernels' therapeutic properties is what modern medicine calls "antimotility agents," they stop diarrhea. Writes Rumphius: "... these same kernels ....

Steep oxygen decline halted first land colonization by Earth's sea creatures

...eathing system in dinosaurs and their descendants, modern birds, is more efficient than systems used by other organisms," Ward said. He and his colleagues tested that hypothesis by examining the breathing system used by birds. They found that at sea level birds breathe 30 percent more efficiently than ma...

Study suggests evolutionary link between diet, brain size in orangutans

...irly recently. Critics argue that it actually is a modern human afflicted with microcephaly, a genetic disorder characterized by an abnormally small head and an underdeveloped brain. ...

Ancient birds flew on all-fours

... from arboreal parachuters and gliders, similar to modern flying squirrels." The first fossil of the Jurassic-era dinosaur Archaeopteryx lithographica was discovered in Germany in 1861, two years after Charles Darwin published his theory of evolution in On The Origin of Species. Since then, eight additio...

Oldest animal fossils may have been bacteria

...eometrical properties of the Doshuanto fossils and modern Thiomargarita bacteria ?they were nearly identical. Coupled with the presence of phosphorite, the result pointed strongly to ancient Thiomargarita activity. "I was shocked that there was this other option out there," Bailey said. The finding al...

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