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Tag: "ancient" at biology news

Otherworldly bacteria discovered two miles down

... sulfate used by these creatures is left-over from ancient groundwater mixed with ancient hydrothermal fluid. We can detect that because the chemical signature arises from interacting with t...

Bacteria that use radiated water as food

...al vent bacteria from the division Firmicutes. The ancient age of the fracture water and comparative DNA analysis of the bacterial genes suggests subsurface Firmicutes were removed from contact with their surface cousins anywhere from 3 million to 25 million years ago. The bacteria's rocky living space is a ...

History-hunting geneticists can still follow familiar trail

... doubts about this classic genetic system to study ancient migrations of people and to estimate the populatio...imillion-dollar endeavor to reconstruct humanity's ancient migrations, and because of well-publicized efforts to track the ancestral roots of Oprah Winfrey and...

West Australian fossil find rewrites land mammal evolution

...sphere, as is widely thought, but in Gondwana, the ancient southern super-continent, and more specifically Australia. But further discoveries of fossils in Australia are needed to confirm this." ...

Oldest animal fossils may have been bacteria

...he rare mineral was unknown. Bailey wondered if an ancient relative of Thiomargarita might have been involved...nce of phosphorite, the result pointed strongly to ancient Thiomargarita activity. "I was shocked that there was this other option out there," Bailey said. ...

Radiologists attempt to solve mystery of Tut's demise

...my believe they have solved the mystery of how the ancient pharaoh died. The CT images and results of their s...ous mysteries about the diseases and lifestyles of ancient Egyptians. King Tutankhamun, who ascended to the throne when he was just eight years old, was mu...

New evidence of early horse domestication

...result of domestication, unlike dogs or cattle. So ancient horse bones don't easily reveal the secrets of domestication. With research funding from the National Science Foundation, Olsen's team took a different tack. They looked for circumstantial evidence that people were keeping horses. One approach was ...

Mayo Clinic collaboration mining of ancient herbal text leads to potential new anti-bacterial drug

... for drug discovery. It integrates nontraditional, ancient medical information with advanced technologies to ... far-fetched to think that the contributions of an ancient text and insights from traditional medicine really may impact modern public health," explains Brent ...

How many genes does it take to learn? Lessons from sea slugs

...w light on evolutionary relationships of this very ancient and highly successful marine animal," said Dennis Steindler, Ph.D., executive director of UF's McKnight Brain Institute, who did not participate in the research. "A very important part of this study is the discovery of novel genes not formerly associ...

Scientists' cell discovery unearths evolutionary clues

...oeba ?Dictyostelia ?which are a hugely diverse and ancient group. Social amoebas are a group of organisms with a genetic diversity that is greater than that of fungi and similar to that of all animals. They offer an excellent experimental system for studying aspects of evolution and communication that are...

Tamed 11,400 years ago, figs were likely first domesticated crop

... in the Lower Jordan Valley, just 8 miles north of ancient Jericho, known to have been inhabited for some 200...eters west of Gilgal. The scientists compared the ancient figs to modern wild and domesticated variants and determined that they were a mutant selectively pro...

Mobile DNA part of evolution's toolbox

...al fish may have been crucial to the transition of ancient animals from sea to land, or to later key evolutio...closest match was to DNA from the coelacanth -- an ancient fish thought to have gone extinct millions of years ago until a live specimen was caught in 1938 off...

Learning the language of DNA

...udogenes ?traditionally thought to be "fossils" of ancient genes ?are actually active, and are therefore likely to have some as yet unknown function. The results obtained by the FANTOM consortium, led by the Japanese scientific institute RIKEN and Genome Network Project, have been published in the current ...

Evolution reveals an independent route for diversity in animal form

... among its constituent species, actually lacks the ancient "Hox" gene system that is essential for the development of most other animals . The finding is surprising because the Hox system is largely responsible for so-called axial patterning, the developmental process that directs the formation of different...

No-mow grass may be coming to your yard soon

...ory's work helps trace a molecular pathway that is ancient -- perhaps more than a billion years old -- in both plants and animals. "Remarkably, steroid biosynthetic enzymes are highly conserved from plants to metazoans (animals), suggesting that the use of steroids as hormones preceded the plant-animal split...

Evolutionary forces explain why women live longer than men

...expectancies of men and women, the gap is actually ancient and universal, according to University of Michigan researchers. "Women live longer in almost every country, and the sex difference in lifespan has been recognized since at least the mid-18th century," said Daniel J. Kruger, a research scientist in t...

Massive duplication of genes may solve Darwin's 'abominable mystery' about flowering plants

...ed a previously hidden "paleopolyploidy" event, an ancient whole-genome duplication that preceded the appeara...ature," says dePamphilis. Detection of still more ancient whole-genome duplications previously has relied on direct observation of genomes that have been comp...

Corals switch skeleton material as seawater changes

... The calcite-producing corals grown in artificial ancient water grew significantly slower than did the aragonite-producing corals grown in modern water. "The reduction in the corals' rate of growth that accompanied their exposure to the chemically modified seawaters is further evidence of corals' extreme s...

Biologists find regions of rice domestication

...domestication," Schaal said. "These landraces are ancient varieties, which are high in genetic diversity, thus valuable to breeders looking for new traits." ...

Methane-belching bugs inspire a new theory of the origin of life on Earth

...iest true microbes. "We know that this bug is very ancient indeed," Ferry told the Penn State Astrobiology Re...hylogenetic evidence that acetate kinase is a very ancient enzyme." No such evidence can pinpoint the age of Pta, "but these two enzymes always work together,"...

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