Tag: "distant" at biology news

Yerkes researchers find primate face recognition can be purely visual

...Many of these photographs represent individuals in distant colonies, whichensured that the subjects in the study did not work with portraits ofindividuals they had known previously. They had to work purely on the basis ofvisual similarities. The subjects were first presented with a sample photograph of an ad...

Molecular biologists prune branches from the animal family tree

...are a similarassortment of Hox genes, while more distant relations have fewer incommon. By decoding the Hox gene sequences of ancient groups of animals,Grenier and Carroll hoped to infer not only who was related to whom, but alsowhich developmental genes were present in the shared ancestor. The project ...

Bizarre striped rabbit discovered in Asia

...,WCS scientists working in Laos found the saola, a distant relative to wildcattle first documented in Vietnam. Two years later, WCS identified a newspecies of barking deer called the giant muntjac, and rediscovered theVietnamese warty hog, thought to be extinct. "It's not coincidental that the Annam...

DNA fingerprinting reveals surprise in wine-grape family tree

...alifornia, Davis, discovered that somewhere in the distant viticultural past, royalty mingled with a commoner. It came as little surprise when DNA fingerprinting techniques revealed that 16 venerable wine-grape varieties, including Chardonnay, Aligote and Gamay noir, are the direct offspring of the classic ...

Tracks in iron provide an insightful map of microbial world

... the distribution of Earth's microorganisms in the distant past,and could help resolve disputes about the existence of past life on otherplanets such as Mars. "This could be an ideal biosignature," Beard says in describing a set of ironisotope-sorting experiments designed to determine if iron found in differ...

Advanced light source reveals secrets of ribosome structure

... are systems of long-rangecommunication connecting distant parts of the ribosome," Noller says. "Ourimages also suggest very strongly that the ribosome is a machine -- and a verycomplex one with many moving parts. It is also clear that most of the excitementof figuring out the molecular mechanism of translat...

USGS finds elevated levels of organochlorine pesticides in Aleutian bald eagles

... well have arrived in the Aleutians from more distant sources. In fact, said Anthony, concentrations of organochlorine contaminants increased in eggs from east to west along the Aleutian Island chain, which suggests that Asia may be one potential source of these pollutants. Seab...

UT Southwestern researchers develop technique to determine protein communication, function

...which they receive and send messages are sometimes distant inmolecular terms. But it seemed unlikely to them that the protein underwent acomplete restructuring to accomplish this information transfer. Ranganathan compared communication between different molecular positionswith an automobile. ...

On the floor of the sea: USGS biologists search for rare, white abalone

...gest problems the abaloneface is that they are too distant from each other to mate. Unlike more mobileanimals, abalone are slow-moving creatures confined to a small area for theirentire life. They reproduce by broadcasting their eggs and sperm into theseawater, and for fertilization to occur, the spawners ne...

Chimpanzee subspecies are genetically mixed and more diverse than humans, according to research in 5 November 1999 Science

...act, some common chimpanzees were more genetically distant from each other than they were from bonobos, a startling fact given that the two are currently separated at the species level. The results indicate that the chimpanzee and the bonobo may have split off in separate evolutionary directions quite recent...

Yale researchers may have solved mystery about why 'Lonesome George' refuses to mate

...eorge is so closely related to subspecies from the distant islands of San Cristobal and Espanola that there was suspicion he may actually have originated on one of these islands and been transported to Pinta, George's home. To test this theory, the Yale team studied skins from stuffed tortoises collected on ...

Hominoid genes meet on middle ground

... copies of genes whose original versions reside in distant regions of the genome. Now Eichler and colleagues propose a novel mechanism for these duplication events, involving a unique, repeated DNA element (CAGGG) discovered in the pericentromeric region. Using fluorescent probes, they imaged the locations ...

A relative of smallpox is first virus found to invade cells as HIV does

... the receptors. If the human smallpox virus -- a distant relative of the myxoma poxvirus -- once attacked human cells by exploiting the CCR5 receptor, then at the same time it was exacting its terrible toll this virus may have spurred evolution of the life-saving CCR5 receptor mutation. Forged in the fierc...

Zebrafish's powerful heart gene could lead to transplant therapy

...nier. "Itvalidates the approach of using even very distant model systems, such as thefly, to study human biology. We show that in the hierarchy of genes thatcontrol myocardial differentiation, gata5 acts early in the pathway." Diaphanous zebrafish embryo reveals its 'artful etchings' The significance of th...

Fossil mayflies can be used to 'weigh' ancient atmospheres

...d quantitatively gauge atmospheric pressure in the distant past was to measure the size of gas bubbles frozen into lava as it solidified. Without more exacting evidence, such as "barometer readings" the mayflies promise to provide, many questions have gone unanswered: -- Has the mass of the atmosphere alwa...

Non-toxic peptide blocks spread of prostate cancer in rats

...o stimulates them to leave the vessels to colonize distant sites." Using knowledge of the biochemistry of the fibronectin receptor site, Livant substituted the amino acid cysteine for arginine in the PHSRN sequence. "We speculated that cysteine might interact with the PHSRN-binding pocket of the fibronecti...

Life on land tied to gene expansion

... who is a graduate student, believe that this more distant promoter evolved more recently, perhaps as a result of a duplication of the one lying closer to the gene. Once formed, the new promoter may have accumulated mutations that enabled it to interact with transcription factors found in developing limb cel...

Unusual mussels may use whale bones en route to hot sea-floor vents

...ermediate between the giant vent mussels and their distant shallow-water cousins. "Rotting whales may provide the missing link between the huge mussels seen at vents and those you find on your plate in a seafood restaurant," Smith said. Whale carcasses that fall to the ocean floor are a huge source of foo...

ASU scientists probe salamander mysteries

...amander deaths in Utah, North Dakota, Wyoming, and distant Saskatchewan. How the virus is spread from one si...olved mystery. Ponds in a single region may be too distant for salamanders to make the trek, virus in tow. And a promenade from Arizona to Saskatchewan is out ...

Diversity of trees in forests may be caused by soil pathogens, IU biologists find

...oil from the same locations. Sterilization of soil distant from the parent tree did not affect seedling survival in the same conditions, demonstrating that a biological agent is killing black cherry seedlings close to adult black cherry trees, Packer said. An important goal for future research is to determi...

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