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Tag: "choice" at biology news

Research identifies protein that signals flowering in squash plants

... FT protein was required for floral induction. The choice of a potyvirus vector was important as these plant viruses do not produce sub-genomic RNA species, whose presence could lead to confounding results. The authors found that C. moschata plants could be induced to flower under the normally non-inducing ...

Largest synthetic gene ever built offers insights into anti-malarial drug resistance

... of quinine, which quickly became the treatment of choice because it was inexpensive − now seven cents a dose − and needs no refrigeration. The drug works by preventing heme crystallization, which destroys the parasite by building up toxic levels of non crystalline heme. But because of the overuse of...

Millions of children denied drug that costs less than $3 a year

...ation recommends phenobarbital as the treatment of choice in resource restricted countries, but this policy has been questioned because of concerns about adverse behavioural effects, particularly in children. Yet a study of children in Bangladesh also published in this week’s BMJ, found no significant di...

Physicist cracks women's random but always lucky choice of X chromosome

...domly between their two X chromosomes and why that choice is always lucky. Human males have both a X and a ...ical mechanisms evolve in ways that allow a "best" choice to be made between things rather than a random one. Now researchers led by University of Warwick ...

Electric fish conduct electric duets in aquatic courtship

...ows for further exploration of such topics as mate choice and neural basis of pattern generation in these fish," explained Hopkins, noting that the next step in the research will be to decode the fish transmissions and unravel their meaning....

Modified mushrooms may yield human drugs

... a recognized potential of the mushroom as being a choice platform for the mass production of commercially valuable proteins," said Charles Peter Romaine, who holds the John B. Swayne Chair in spawn science and professor of plant pathology at Penn State. "Mushrooms could make the ideal vehicle for the manu...

'Personality-gene' makes songbirds curious

...stitute of Ecology in Heteren, have shown that the choice of the Drd4-gene in the study of the great tit turned out to be a good bet. In the Drd4 gene of this bird, they discovered 73 polymorphisms, of which 66 were so-called Single Nucleotide Polymorphisms (SNPs), where only a single nucleotide has be...

US control strategies may make flu epidemics worse, UCLA study shows

... is because when the head of the household makes a choice ?flu shots or no flu shots ?on behalf of all the other household members, there is no individual decision-making, and adaptability is decreased. While other models have determined what proportion of the population would need to be vaccinated in o...

Double the death rate from cirrhosis for 'blue collar' men

...x on wine means cask wine is often the beverage of choice for the poorest and most marginalised people." The study's findings dovetail with another paper recently published in the Bulletin of the World Health Organisation by Professor Najman and co-authors, Dr Ghasem Toloo and Dr Victor Siskind, urging ...

Metacognition: Faced with a test, rats can check their knowledge first

...ned during a "study period," and were then given a choice of taking the test or declining it. Animals were t...oise as either "short" or "long"—a relatively easy choice if the noise fell to one extreme or another (for example, 8 seconds), but a difficult choice if the ...

Female Antarctic seals give cold shoulder to local males

...blished in this week's Nature, suggest that female choice may be more widespread in nature than previously b... it's not only remarkable to uncover active female choice in such a system, but this also suggests that female choice may be more widespread in nature than we...

Rapid oral HIV test shows great promise according to MUHC-led research

...ed on our findings, the oral test is the preferred choice for HIV field testing by rural Indians," says Dr. Pai, a physician epidemiologist supported by the Canadian HIV Trials Network. "The other advantages are that results are available within 40 minutes compared to the standard blood test, which takes up...

Reading hidden intentions in the human brain

...refrontal cortex as subjects concentrated on their choice of two future actions, researchers have been able ... of past related responses, or bearing in mind the choice of responses available. To address the question of whether intention might be reflected in prefro...

The price of vanity: Mating with showy males may reduce offspring's ability to fight off pathogens

... female testosterone levels are correlated, female choice also results in an increase in female testosterone...lity to fight off diseases. Therefore, a female's choice of a male with exaggerated ornaments may make her daughters and granddaughters less able to resist p...

Rewarding fat rats

...For animals in the natural world, making the right choice can mean the difference between life and death. When rats and other animals choose the thing that leads to a "reward," such as food, changes happen in the body and the brain. Describing and understanding those changes has been the focus of Natural ...

New cigarette designs don't offer lower predicted cancer risks

...ompany boasts on its Web site, making it a natural choice "for smokers who have decided not to quit, but who are interested in a cigarette that responds to concerns about certain smoking-related illnesses, including cancer." Another tobacco firm, in a print ad for the brand, has crowed "All of the taste ?Le...

Birth rate, competition are major players in hominid extinctions

...not compete reproductively and could not alter its choice of food. "We find that the early members of the genus Homo who succeeded were super ecological opportunists," says Jablonski. "They would eat vegetation and scavenge, kill small animals and forage." Cultural adaptations helped these opportunis...

Termites get the vibe on what tastes good

...e control of feeding termites. By offering them a choice between normal wooden blocks and specially designe...icated that previously thought. "When offered a choice between blocks of their normal wooden food, and specially engineered blocks made of wood and other m...

Are scientists making progress in being able to regenerate bone tissue?

... of the patient’s own body has been the number one choice for attempting to restore function. But there are major problems with such grafts—for example, removing bone from a different part of the body can lead to post-operative pain, infection, and abnormal sensations at the removal site. An alternative i...

Ultrathin films deliver DNA as possible gene therapy tool

..." The secret to films that release DNA is in the choice of the polymer and the layer-cake design. The researchers alternate layers of DNA with layers of a polymer that is stable when dry but that degrades when exposed to water. Because the polymers carry a positive electric charge that is attractive to ...

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