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Tag: "example" at biology news

Winning by a neck -- Giraffes avoid competing with shorter browsers

...of evolution by natural selection, but this common example has received very little experimental attention. I...rovides support for a previously untested textbook example of natural selection," says Elissa Cameron (University of Pretoria), who coauthored the study with J...

Microcapsules like it hot and salty

...ain, the wall thickening as described in the first example above. "By combining simple materials available in any kitchen, we can vary the properties of the wall of the microtransport system in any way we wish," said Karen Kohler, a scientist working on this project at the Max Planck Institute of Colloids an...

Viral marker of human migration suspect

...lly associated with another group," she said. "For example one finds viruses from the Japanese and Korean subtype in the European subtype group--another incongruency." If the virus had been strictly passed down from parent to child and had kept step with human migration, one would expect the various subty...

New finding points way to foiling anthrax's tricks

... race between pathogen and host. This is the first example of a protein produced by the human immune system that disrupts bacteria's iron scavenging system," said Ken Raymond, UC Berkeley professor of chemistry and faculty scientist at Lawrence Berkeley National Laboratory. Anthrax bacteria are known to ...

Beauty and the brain

...y protuberant eyes might be a clue to disease, for example ?and so is a kind of shorthand for the value of a potential mate. But whereas that explanation makes intuitive sense when it comes to human faces, Winkielman said, it strains credulity when applied to inanimate objects or animals of a different sp...

Striking the right balance between excitation and inhibition

... neurons evaluate the strength of sensations. "An example of how the system works is illustrated by what happens when you cut your finger," Goulding explains. "Initially it hurts a lot, but the pain then eases. One of the reasons that this happens is because inhibitory interneurons in the dorsal spinal cord...

Plant-cell-produced technologies-cutting edge approach to bringing solutions to the market

...y to ever register a plant-made vaccine is another example of Dow AgroSciences' cutting edge approach to bringing highly novel and differentiated solutions to the market," said Jerome Peribere, Dow AgroSciences' president and CEO. The conference on 7 June, entitled "Innovations in Biosciences for Animal and...

Tastes great! Study shows brain's response to pleasing -- and changing -- tastes

...ll, Aldridge says, the new paper is "a really good example of how animal experiments help us understand the human brain. If we can understand how the brain generates normal pleasures, we may have a new focus for effective treatments in people who don't experience normal pleasure." ...

Mobile DNA part of evolution's toolbox

...ler and his colleagues then looked at a particular example -- a copy of the ultraconserved element that is near a gene called Islet 1 (ISL1). ISL1 produces a protein that helps control the growth and differentiation of motor neurons. In the laboratory of Edward Rubin at the University of California, Berkel...

'Cellular antennae' on algae give clues to how human cells receive signals

...higher animals, Dr. Snell said. "This is another example of how basic science research can have big results," he said. "Studies on Chlamydomonas will help us understand the unique qualities of cilia that have led to their use in chemosensory pathways in humans." ...

Eminent inventor of DNA fingerprinting gains new recognition

...s discoveries have also opened up other doors, for example the ability to determine whether someone is a carrier of certain pathogenic genes. Most recently, Jeffreys has concentrated on genetic mutations and environmental factors. He is, for example, studying how irradiation may have caused genetic mutations...

Copying nature could save us energy, study shows

...e solutions to problems are already built in. "An example might be a hammer," said Professor Julian Vincent from the University of Bath who led the research . "A man-made hammer has a very heavy head, so that it is heavy to carry around and lift but can do a lot of work with one hit. It relies on inertia....

OHSU study says stem cell 'fusion' occurs in tumors

... said, "Our paper is unique because it's the first example that cell fusion occurs in the epithelial compartment of a tumor." Other OHSU studies in recent years are giving weight to the fusion theory. A series of discoveries since 2000 by study co-author Markus Grompe, M.D., professor of molecular and medic...

Report focuses on the role good microbes play in future medicine

...s, making it harder for them to cause disease. An example of this is the ingestion of probiotic bacteria to ...sota, a member of the steering committee. Another example of microbe-microbe interaction in probiotics is a phenomenon known as "competitive exclusion" in whi...

Scientists describe new African monkey genus ?first in 83 years

...rsity of Alaska Museum. "This study is a textbook example of how a variety of individuals and institutions spanning the globe can work together to significantly improve our understanding of the biodiversity of this planet," Stanley says. "Within hours of Sophy Machaga creeping through the rain-soaked forest...

Major initiative proposed to address amphibian crisis

...al mine" - the first clear and sweeping biological example of environmental change, pollution and toxicity that may ultimately affect many other animal species, including humans.The demise of amphibians also has ecological ripple effects ?they provide a major control of insect pests, and in turn serve as par...

How did cactuses evolve?

... "The cactus form is often heralded as a striking example of the tight relationship between form and function in plants," write the authors. "A succulent, long-lived photosynthetic system allows cacti to survive periods of extreme drought while maintaining well-hydrated tissues." Recent molecular phylogen...

Methane-belching bugs inspire a new theory of the origin of life on Earth

...s a very significant contribution, and a wonderful example of interdisiplinary work as well." "We've taken a new approach to thinking about the evolution of life from a thermodynamic perspective," Ferry says. "It reshapes the two previous theories of life's origin, it shows how they overlap, and it extends ...

One-dimensional diffusion accelerates molecular motors

...gulated. The Max Planck researchers looked at the example of the protein MCAK, and how it locates microtubule ends. Howard and his colleagues followed single MCAK molecules under the microscope and could see that MCAK docks randomly anywhere on a microtubule, and then slides around on its surface. This "ra...

Scientists take 'snapshots' of enzyme action

...ed, and possibly develop corrective measures. One example is a condition called trimethylaminuria, also known as "fish odor syndrome," which results from defective FMOs. Affected individuals are unable to oxygenate trimethylamine, a byproduct of protein digestion released by bacteria living in the gut. Peop...

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