Genetic Archaeology News Archives Page 11
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 | Genetic studies on whole animals can now be done dramatically faster using a new microchip developed by engineers at MIT. ...> Full Article |
 | Employing microsatellite and mitochondrial control region (CR) sequences as genetic markers, CAS researchers have obtained some key information about the giant panda (Ailuropoda melanoleuca) and depicted its recent evolution history. They discovered that the lovely species still possesses high genetic diversity and evolution potentials, putting an end to the hypothesis suggesting the giant panda is facing an 'evolutionary dead-end'. ...> Full Article |
 | Researchers at the University of Illinois at Chicago have discovered a chemical compound in male blue crabs that is not present in females -- the first time in any species that an entire enzyme system has been found to be activated in only one sex. ...> Full Article |
 | An Australian bird has been found to produce smaller, less nourishing eggs when it breeds in the presence of other 'helper' birds that provide child-care assistance. This unique adaptation enables the birds to live longer and breed more often than females without helpers. The research, led by a University of Cambridge academic, was published in Science. ...> Full Article |
 | "Don't ever change" isn't just a romantic platitude. It's a solid evolutionary strategy. ...> Full Article |
 | An Alaska wolf that disappeared about 12,000 years ago just made another appearance. ...> Full Article |
 | Portuguese scientists show that in bacteria the rate of beneficial mutations – those that increase the capacity of an organism to survive in a particular environment – is much higher than previously thought. ...> Full Article |
 | Researchers at the University of Sheffield in the UK and Leibniz Institute for Zoo and Wildlife Research (IZW) in Berlin, Germany, have found that female hyenas avoid inbreeding with their male relatives by giving them little choice but to leave their birth group. ...> Full Article |
 | Delaying having kids to help raise the offspring of others seems like a bad choice if you want to reproduce, but many African starlings have adopted this strategy to deal with the unpredictable climate of their savanna habitats, according to a new study by University of California, Berkeley, and Cornell University biologists. It appears in the Aug. 21 issue of the journal Current Biology. ...> Full Article |
 | An international team of scientists from Canada (Université Laval), the U.K. (University of Hull, Cardiff University) and Spain (Doňana Biological Station), have discovered that a pair of closely related species of East African cichlid fishes -- a group of fish whose diversity comprising hundreds of species has puzzled evolutionary biologists for decades -- evolved divergent immune gene adaptations which might explain why they do not interbreed, despite living side by side. ...> Full Article |
 | Men with large jaws, flaring cheeks and large eyebrows are sexy, at least in the eyes of our ancestors, researchers at the Natural History Museum have discovered. Facial attractiveness played a major role in shaping human evolution, as studies on our fossil ancestors have shown our choice of sexual partner has shaped the human face. ...> Full Article |
 | Most modern attempts to decipher how portions of genetic code are translated into physical characteristics are akin to a first-grader trying to sound out a word letter by letter - or, in this case, base pair by base pair. ...> Full Article |
 | When the first four-legged animals sprouted fingers and toes, they took an ancient genetic recipe and simply extended the cooking time, say University of Florida scientists writing in Wednesday's issue of the journal PLoS One. ...> Full Article |
 | A detailed map that pinpoints the location of every atom in a 450-million-year-old resurrected protein reveals the precise evolutionary steps needed to create the molecule's modern version, according to researchers from the University of North Carolina at Chapel Hill and the University of Oregon. ...> Full Article |
.jpg) | A researcher at the University of Sheffield has discovered that the reason birds learn to fly so easily is because latent memories may have been left behind by their ancestors. ...> Full Article |
 | Biologists at Harvard University and the University of California, San Diego, have found that a simple interaction between just two genes determines the patterns of fur coloration that camouflage mice against their background, protecting them from many predators. The work, published recently in the journal PLoS Biology, marks one of the few instances in which specific genetic changes have been linked to an organism's ability to survive in the wild. ...> Full Article |
 | Findings indicate alternative splicing is highly regulated ...> Full Article |
 | The plant growth hormone auxin is controlled by circadian rhythms within the plant, UC Davis researchers have found. The discovery explains how plants can time their growth to take advantage of resources such as light and water, and suggests that many other processes may be influenced by circadian rhythms. ...> Full Article |
 | Duke researchers found variances in two major traits when they compared gene regulation in chimps, humans and rhesus macaques ...> Full Article |
 | A gene mutation that appears to be responsible for changing relatively mild forms of the West Nile virus into a highly virulent and deadly disease in American crows has been identified by a team of scientists led by a researcher at the University of California, Davis. ...> Full Article |
 | Scott Cummins and his colleagues at The University of Queensland have uncovered a potent mix of chemicals which acts like a cross between Chanel No 5 and Viagra—but only if you are a sea slug. ...> Full Article |
 | A little boy's natural curiosity may have turned up archeological evidence that the earliest Native Americans came from Europe, not Asia. ...> Full Article |
 | Rainforests are the world's treasure houses of biodiversity, but all rainforests are not the same. Biodiversity may be more evenly distributed in some forests than in others and, therefore, may require different management and preservation strategies. That is one of the conclusions of a large-scale Smithsonian study of a lowland rainforest in New Guinea, published in the Aug. 9 issue of the journal Nature. ...> Full Article |
It is not just what's in your genes, it's how you turn them on that accounts for the difference between species - at least in yeast - according to a report by Yale researchers in this week's issue of Science.
...> Full Article
 | Using DNA sequence data, botanists have shown that the large southern hemisphere plant family Proteaceae lived on the super-continent Gondwanaland almost 120 million years ago. ...> Full Article |
 | Approximately 250 million years ago, vast numbers of species disappeared from Earth. This mass-extinction event may hold clues to current global carbon cycle changes, according to Jonathan Payne, assistant professor of geological and environmental sciences. Payne, a paleobiologist who joined the Stanford faculty in 2005, studies the Permian-Triassic extinction and the following 4 million years of instability in the global carbon cycle. In the July issue of the Geological Society of America Bulletin, Payne presented evidence that a massive, rapid release of carbon may have triggered this extinction. ...> Full Article |
 | Researchers at the U.S. Department of Energy's Argonne National Laboratory have cast new light on why the giant insects that lived millions of years ago disappeared. ...> Full Article |
 | No sooner had cells evolved linear chromosomes than they had a life-threatening problem to solve. To the machinery that repairs broken DNA, chromosome ends look a lot like breaks in need of mending, so they could elicit a DNA damage response that would ultimately be lethal to cells. Telomeres, segments of DNA that sit at the ends of chromosomes, resolve this situation by protecting chromosome ends from being mistaken for DNA breaks. Now, new research shows that two proteins work independently to repress - and control - the activation of damage response pathways that might otherwise cause chromosomes to be harmed. ...> Full Article |
 | Assessing the projected impacts of invasive species is a leading issue for scientists today. A major question for ecologists is determining which characteristics will predispose a species to be a good or bad colonizer when introduced into an ecosystem. New research from assistant professor at the UGA Odum School of Ecology John Drake adds another piece to the invasive species puzzle. ...> Full Article |
 | Transcription - the transfer of DNA's genetic information through the synthesis of complementary molecules of messenger RNA - forms the basis of all cellular activities. Yet little is known about the dynamics of the process - how efficient it is or how long it takes. Now, researchers at the Albert Einstein College of Medicine of Yeshiva University have measured the stages of transcription in real time. Their unexpected and surprising findings have fundamentally changed the way transcription is understood. ...> Full Article |
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