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Tag: "select" at biology news

Genetic discovery could lead to drought-resistant plants

...edge of how plants "breathe" may help us breed and select plants that would better survive scorching summers, says a University of Toronto study. The paper, which offers the first example of a gene that controls how leaves close their surface pores, appears in the July 12 issue of Current Biology. "It's ve...

Sugar helps control cell division

...ities. The researchers' next steps are to examine select proteins modified by O-GlcNAc and found at locations important for various steps in cell division to figure out why an imbalance of O-GlcNAc on the cells' proteins has such a dramatic effect on the process. The researchers were funded by the Nation...

Traditional models underestimate extinction rates

...nvironmental variability on water flea survival to select his models and estimate a range of parameters that might affect extinction, and the other half to test the models' reliability. From the estimated parameters, Drake wrote a computer program to simulate all the possible population outcomes and predict...

Virtual animal shelters ?How the Internet is transforming the experience of pet adoptions

...ter ?anyone in the country can click on a site and select a region where they want to find their new addition to the family. And, the Internet dog search shuts out the noise and the smells associated with a county shelter. However, Garcia adds that the drawbacks are that pet postings are not interactive, a...

New plant DNA libraries provides massive boost to world's plant researchers

... cut up the DNA but this method may preferentially select only certain regions of DNA and exclude other regions from the final plant "library". The techniques used by the Warwick researchers remove this limitation and make the plant's entire DNA available to researchers. The new plant DNA libraries include...

Color perception is not in the eye of the beholder: It's in the brain

...n when not wearing the contacts, they all began to select a pure yellow that was a different wavelength than they had before wearing the contacts. "Over time, we were able to shift their natural perception of yellow in one direction, and then the other," says Williams. "This is direct evidence for an inte...

Costly breeding programs for endangered species pay off

... "Apparently, the stressful environment served to select only the most fit lines while the more benign environment allowed low-fitness lines to persist in captivity," said Meffert. Though the findings clearly support the case for expensive MAI breeding schemes for some endangered animals, Meffert suspects...

Biologist Discovers What May Be World’s ‘Pickiest?Mates

...2; Interested females initially eye the males, who select their burrows based upon their body size, and if they’re interested, partially or fully enter a burrow to size it up. “The burrow openings, which are circular, are just big enough for the owners to get in,?deRivera said. “Crabs enter burrows sideway...

Same-sex mating by fungi spawned infection outbreak, evidence suggests

...hich made up the other five percent. By comparing select gene sequences that spanned the genomes of the Vancouver Island fungi to samples collected from around the world, the team traced the rarer type to identical isolates in Australia. The major form matched a sample taken from an infected person in Seat...

Older female fish prefer imperfect male mates, study finds

...t a certain age or size, that makes larger females select more asymmetrically striped males. The asymmetrical barring pattern is likely a result of environmental stresses experienced before birth, Morris explained. Some males have the genetic makeup to deal with these stresses and still develop a symmetric...

Clocking in Pillow Time without the Pillow

...nkeys had to remember the image. Then, they had to select the correct image from a group of others shown on the monitor simultaneously. When monkeys correctly selected the original image with a cursor, they got a squirt of juice in their mouth as reward. The researchers measured how long they could keep the...

Noise And Delays Explain Why Some Genes Oscillate In Activity

...nkeys had to remember the image. Then, they had to select the correct image from a group of others shown on the monitor simultaneously. When monkeys correctly selected the original image with a cursor, they got a squirt of juice in their mouth as reward. The researchers measured how long they could keep the...

Wild Gorillas Handy with a Stick

...armful of dried palm nuts,?sit down beside a rock, select a nut, place it on a flat rock surface, and pound it with another rock to extract the meat. Thirty years passed before primatologists would describe the same behavior in chimps in Guinea. By then it was clear that nonhuman primates used objects for m...

The bioweapon is in the post

...g to make difficult judgments based on the list of select agents. "Tell us what we can't make," he implores. But with gene synthesis firms springing up all over the world, and the underlying technology becoming cheaper and more widely available, it is unclear whether regulations enacted in any one country ...

Worms know bad food when they smell it

... or S. marcescens ), they were just as likely to select the new, toxic food source as they were to stick with the safer choice. In fact, when the choice was between E. coli and S. marcescens, they migrated towards the latter, despite the likelihood that this would result in a toxic infection. The wor...

Children overprescribed antibiotics for sore throat

...ed prevalence of GABHS, and physicians continue to select unnecessarily broad-spectrum antibiotics. Unnecessary antibiotic prescriptions are not benign: they increase the prevalence of antibiotic-resistant bacteria, expose patients to adverse drug events, and increase costs. Perhaps unique among upper respi...

Picking particles faster than one at a time

...tional Laboratory have developed software that can select tens of thousands of high-quality images of biolog... chosen at random. On his first pass, intending to select only particles of the highest quality -- a "gold standard" -- he chose roughly two-thirds of the sam...

Infant transplant patients resist infections that kill adult AIDS patients

...ell function, they measured the T cell response to select viral immunization. This comparison enabled them to see that infant heart transplant patients had more help from the immune system post transplant -- even though some had a 10,000-fold reduction in T cells -- compared to the healthy control group. Th...

Underdogs in the understory: Study suggests nature favors rarer trees

...stems, from temperate forests to coral reefs, also select for biodiversity. (Photos of Muller-Landau and a tropical forest are available on request.) ...

Mining for gems in the fungal genome

... are bioactive compounds that are only produced at select times during the life cycle of the organism," explains Keller, noting that the compounds can help fungi survive various environmental stressors. Some secondary metabolites have powerful heath effects in humans, such as penicillin, which certain fu...

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