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Tag: "striking" at biology news

Protein Packages Found To Activate Genes; May Be What Regulates Development And Disease

...lifornia technology company. The analysis shows a striking and surprising exception in the way some critical genes are activated by the protein packaging. These proteins act like spools for the long strings of DNA that contain our genes and form chromosomes. The researchers studied chemical tags that are att...

Same mutation aided evolution in many fish species, Stanford study finds

...teration in how a gene was turned on and off. The striking similarity is that in both studies evolution turned to the same genetic switch to work a visible change in the fish. However, in the fin study the group wasn't able to pinpoint the exact genetic alteration. The group continues to wade out into natur...

Introduced foxes transformed vegetation on Aleutian Islands from lush grasslands to tundra

...lago to the other. Estes said the differences were striking between fox-free islands and fox-infested islands (defined as those where self-sustaining populations of foxes persisted into the late 1990s). "When you go to an island that had foxes, it's very easy to walk around because the plants don't grow much...

Researchers trace evolution to relatively simple genetic changes

...hless men of Sind,' a pedigree (in India) that was striking because many of the men were missing their hair, had very few teeth, and couldn't sweat in hot weather. It's a very unusual constellation of symptoms, and is passed as a unit through families." Research had already shown that the Eda gene makes a pr...

Octopuses occasionally stroll around on two arms, UC Berkeley biologists report

...hless men of Sind,' a pedigree (in India) that was striking because many of the men were missing their hair, had very few teeth, and couldn't sweat in hot weather. It's a very unusual constellation of symptoms, and is passed as a unit through families." Research had already shown that the Eda gene makes a pr...

Devising Nano Vision for an Optical Microscope

...r geometry of each type of specimen—scatters after striking the target can reveal the tiniest of details. “The scattering patterns are extremely sensitive to small changes in the shape and size of the scattering feature,?explains Rick Silver, a physicist in NIST’s Precision Engineering Division. ...

Examination of internal 'wiring' of yeast, worm, and fly reveals conserved circuits

...cuitry is not exactly the same. In fact, there are striking differences that warrant more investigation." The team included Roded Sharan, a computer scientist currently at the Tel-Aviv University in Israel; Tanja Kuhn and Peter Uetz, researchers at the Institute of Genetics in Karlsruhe, Germany; Ideker, Sil...

Researchers rein in regulatory RNAs

...'s group found that the transcripts shared several striking characteristics. Northern blot hybridization analyses of six randomly chosen SAT pairs revealed that the SAT loci generated multiple transcripts of various sizes, in contrast to a single transcript that is expected under the traditional one gene-one ...

Love's all in the brain: fMRI study shows strong, lateralized reward, not sex, drive

...ere mostly on the left. "We didn't predict such a striking lateralization," Brown reported. "It is well known that speech is largely a left-sided cortical function. But our data indicate that lateralization also occurs in lower parts of the brain. Moreover, different kinds of rewards (in this case, the "rush...

A New Species of Monkey is Discovered in Tanzania: The First in Africa for More Than 20 Years

...on Union's Species Survival Commission. ``A large, striking monkey in a country of considerable wildlife research over the last century has been hidden right under our noses." The new arboreal mangabey is brown, with a head and body length of about 3 ft (90 cm). It is characterized by a long, erect crest of...

Scientists discover global pattern of big fish diversity in open oceans

...tp://www.sciencexpress.org) on July 28th reveals a striking downward trend in the diversity of fish in the open ocean ?the largest and least known part of our planet. Teasing apart the effects of climate change and fishing over the past 50 years, the authors show a clear link to overfishing and highlight a su...

Certain fish have a special mating preference

...searchers have thought for about 20 years that the striking diversity of genital form results from post-mating sexual selection, such as sperm competition or cryptic female choice. That is, most evolutionists have believed that for animals with internal fertilization -- like the livebearing fish Langerhans st...

IMF Launches World’s First DNA Database for Myeloma Patients

...searchers have thought for about 20 years that the striking diversity of genital form results from post-mating sexual selection, such as sperm competition or cryptic female choice. That is, most evolutionists have believed that for animals with internal fertilization -- like the livebearing fish Langerhans st...

Deep thinking: Scientists sequence a cold-loving marine microbe

...prints, this strategy allowed the team to spot any striking distinctions in C. psychrerythraea's amino acid composition, highlighting differences unique to the cold-loving organism. Together, these analyses offer a picture of evolution in action, as C. psychrerythraea uses subtle tweaks in common bacterial b...

Bacteria use host's immune response to their competitive advantage

...s pneumoniae--a leading cause of pneumonia. "It is striking that the host's response can so completely eliminate the competitor," says Weiser. The findings also demonstrate how antibiotics and vaccines that target one microbe might inadvertently alter the competitive interactions among other species present....

Multi-species genome comparison sheds new light on evolutionary processes, cancer mutations

... to have resulted from a massive comet or asteroid striking Earth, mammals shared fairly similar body plans and also fairly similar genomes. Researchers speculate that the mass extinction opened new ecological niches for mammals, spurring their diversification and the emergence of new mammalian orders. This s...

Carnegie Mellon University research reveals how cells process large genes

... now testing this hypothesis experimentally. "The striking evolutionary conservation of ratchetting points suggests that recursive splicing provides specific advantages for large introns," Lopez said. "One possibility is that recursive splicing prevents the generation of long RNA transcripts that could form ...

Reversal of role for a viral protein associated with the development of lymphoma

... now testing this hypothesis experimentally. "The striking evolutionary conservation of ratchetting points suggests that recursive splicing provides specific advantages for large introns," Lopez said. "One possibility is that recursive splicing prevents the generation of long RNA transcripts that could form ...

'Shifty-eyed' Monkeys Offer Window Into Brain's Social Reflexes

...aze is, indeed, powerful, said Platt. 'It's really striking when you're sitting there, and you look at these faces pop up,' he said. 'You feel yourself wanting to look in that same direction.' Platt said that the finding offers the promise of a manipulable animal model of 'social attention' -- how the human b...

Muscle repair: Making a good system better, faster; implications for aging, disease

...he University of Michigan. The study showed quite striking differences in how normal (wild type, or WT), PAI-1 deficient (null) and uPA null mice recovered from muscle injury. Five days after an injury, PAI-1 null mice had recouped nearly 40% of pre-injury muscle force, significantly greater than WT or uPA n...

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