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Tag: "years" at biology news

New Clues Add 40,000 Years to Age of Human Species

Nearly 40 years after an historic anthropology expedition to Ethio...human bones found at that time are roughly 195,000 years old. The researchers believe the findings may bolster the “Out-of-Africa?hypothesis that suggests w...

Spider Venom Could Yield Eco-Friendly Insecticides

...ian funnel-web spiders can live for more than five years in captivity, a small group of these spiders yields plenty of toxins for King's chemical analysis. Funnel-web spider venom is a complex brew of more than 100 chemical compounds, most of which are toxic to insects, but not vertebrates. King is studyi...

Muscle-targeted gene therapy reverses rare muscular dystrophy in mice

...r-targeted gene therapies will likely take several years to launch, Koeberl said. Collaborators on the gene therapy studies include Baodong Sun, Haoyue Zhang, Luis Franco, Andrew Bird, Ayn Schneider, Sarah Young, Y.T. Chen, and Andy Amalfitano, all of Duke Medical Center, and Talmage Brown, of North Carol...

Scientists decipher genome of fungus that can cause life-threatening infections

...tion andwhich have been diverging over millions of years of evolution....

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

...in has been studying chromosome wrappings for five years as a postdoctoral researcher in the lab of Stuart Schreiber. Together they worked out techniques to examine the way genes are packaged in yeast. To go from yeast to humans required a technological breakthrough, however. "Most prior studies involved ...

Elephants imitate truck noises, other animals

...23-year-old male African elephant who lived for 18 years with two female Asian elephants in a Swiss zoo, was a nearly perfect mimic for the chirp-like calls of his long-time zoo mates. The chirps are made by Asian elephants but not by African elephants. Calimero often mimicked the chirps but rarely made an...

Nanogen Issued Patent for Electronic Microarray With Memory

...n cardiac related health conditions. Nanogen's ten years of pioneering research involving nanotechnology may also have future applications in medical diagnostics, biowarfare and other industries. For additional information please visit Nanogen's website at www.nanogen.com. ...

Elephants imitate sounds as a form of social communication

...23-year-old male African elephant who lived for 18 years with two female Asian elephants in a Swiss zoo, was a nearly perfect mimic for the chirp-like calls of his long-time zoo mates. The chirps are made by Asian elephants but not by African elephants. Calimero often mimicked the chirps but rarely made an...

Highly adaptable genome in gut bacterium key to intestinal health

...lete genome sequence of B. theta was generated two years ago in the same laboratory. The researchers inoculated germ-free mice, who have no intestinal bacteria, with B. theta. The mice were fed a diet high in complex carbohydrates and low in simple sugars. Ten days later, the activity of all genes in the ...

Amino acids in nectar enhance butterfly fecundity: A long awaited link

...ttractants, of which nectar is best known. Thirty years ago, researchers discovered that nectars of flowers pollinated by butterflies contain substantial amounts of amino acids. Recent experiments have shown that butterflies actually prefer nectars with a high amino acid content. These findings led to spe...

Ants Genetic Engineering Leads To Species Interdependency

...uction ofworker ants for both species. Millionsof years before the first modern humans evolved, ants were practicingmany of the social innovations we consider to be our own: division oflabor, agriculture, and even slavery.Indeed, these traits have been taken to their extreme in many antspecies, such as th...

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

...d sizes when the last Ice Age ended roughly 10,000 years ago. Because ocean fish quickly evolved into such distinct populations when they colonized new freshwater lakes and streams, they are an ideal model for understanding how animals adapt to their unique environments. The recent work carries a few surp...

Researchers trace evolution to relatively simple genetic changes

...reams when the last ice age ended 10,000 to 15,000 years ago. Then they evolved along separate paths, each adapting to the unique environments created by large scale climate change. "There are really dramatic morphological and physiological adaptations" to the new environments, Kingsley said. For example...

Scientists reveal molecular secrets of the malaria parasite

...e Science paper represents the culmination of four years ofcooperative work by scientists at several research institutes,including: the Wellcome Trust Sanger Institute in the U.K., where thesequencing and genome annotation was performed on two species of rodentmalaria (Plasmodium chabaudi and P. berghei); ...

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

...reams when the last ice age ended 10,000 to 15,000 years ago. Then they evolved along separate paths, each adapting to the unique environments created by large scale climate change. "There are really dramatic morphological and physiological adaptations" to the new environments, Kingsley said. For example...

Development of portable infectious disease detector

...before theholidays.VIIBRE has spent the last three years developing the ability to measurethe metabolism of...major impact on the drug discovery process.Fifteen years ago a number of start-up companies were created to makethe goal of creating a "lab-on-a-chip" a real...

Scientists discover unique microbe in California's largest lake

...n ancestor with cyanobacteria more than twobillion years ago.The small subunit ribosomal RNA gene is widely...ngcyanobacteria between roughly 10 and 100 million years ago."The maintenance of this hybrid gene over such a long time periodsuggests that it has been favor...

Alcohol's effects on gene expression in the central nervous system

...just beginning in the field of alcoholism. Several years ago, it was impossible to analyze more than a handful of these genes, however, microarray technology has changed that." Symposium speakers at the June 2004 Research Society on Alcoholism meeting in Vancouver, B.C. presented the following findings fr...

NYC's First Rapid HIV Drug-resistant AIDS Case Prompts Call to Step Up HIV Prevention

...by mid-January. Ordinarily, it has taken up to ten years for an untreated individual to progress from HIV infection to an AIDS defining illness and diagnosis. "It appears this individual has contracted a new, particularly virulent strain of HIV that swiftly advanced to AIDS in just a few short months," sa...

Zebrafish may hold key to understanding human nerve cell development

...al forhealthy nerve cells. However, in the last 10 years scientists havelearned that glia aren't just "glue" holding nerve cells together. Gliacommunicate with each other and even influence synapse formationbetween neurons.Piotrowski's research in zebrafish focuses on the development ofsensory neurons know...

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