News tagged with selective pressure
Endangered orangutans offer a new evolutionary model for early humans
Starving orangutans in Borneo may be teaching us new lessons about human evolution.
Dec 13, 2011 |
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Could thermodynamic fluctuations have led to the origins of life?
In the field of abiogenesis, scientists are currently investigating several ways in which life could have arisen from non-living matter. Generally, any theory of abiogenesis should account for two important ...
Aug 16, 2010 |
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Search results for selective pressure
50-year cholera mystery solved: Answers may help clear the way for a new class of antibiotics
For 50 years scientists have been unsure how the bacteria that gives humans cholera manages to resist one of our basic innate immune responses. That mystery has now been solved, thanks to research from biologists at The University ...
May 29, 2012 |
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Researchers demonstrate possible primitive mechanism of chemical info self-replication
(Phys.org) -- When scientists think about the replication of information in chemistry, they usually have in mind something akin to what happens in living organisms when DNA gets copied: a double-stranded molecule ...
May 25, 2012 |
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Human-like spine morphology found in aquatic eel fossil
For decades, scientists believed that a spine with multiple segments was an exclusive feature of land-dwelling animals. But the discovery of the same anatomical feature in a 345-million-year-old eel suggests ...
May 23, 2012 |
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Wearable electronics - the next fashion fad?
(Phys.org) -- When most of us think of electronics, we think of the sturdy stability of silicon and plastic. Flexibility is a trait that belongs to the organic world, where materials come in all shapes and ...
Technology / Hi Tech & Innovation
May 23, 2012 |
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Deterring signals: Tobacco plants advertise their defensive readiness to attacking leafhoppers
Following herbivory, plants produce jasmonic acid, a hormone which activates several plant defense reactions. Scientists found that leafhoppers can evaluate whether tobacco plants are ready for defense when attacked. If jasmonate-signaling ...
May 23, 2012 |
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Top 10 new species list draws attention to diverse biosphere
The International Institute for Species Exploration at Arizona State University and a committee of scientists from around the world announced their picks for the top 10 new species described in 2011. This ...
May 23, 2012 |
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Factors behind past lemur species extinctions put surviving species in 'ecological retreat'
New research out today on the long-term impact of species extinctions suggests that the disappearance of one species does not necessarily allow remaining competitor species to thrive by filling now-empty niches.
May 23, 2012 |
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Octopuses focus on key features for successful camouflage
Octopuses camouflage themselves by matching their body pattern to selected features of nearby objects, rather than trying to match the entire larger field of view, according to new research published in the ...
May 23, 2012 |
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How one strain of MRSA becomes resistant to last-line antibiotic
Researchers have uncovered what makes one particular strain of methicillin-resistant Staphylococcus aureus (MRSA) so proficient at picking up resistance genes, such as the one that makes it resistant to vancomycin, the last ...
May 22, 2012 |
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Synthetic scent hounds: Nanostructured sensor for detection of very low concentrations of explosive
To prevent terrorist attacks at airports, it would be helpful to detect extremely low concentrations of explosives easily and reliably. Despite the development of various sensor technologies, dogs continue ...
May 18, 2012 |
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List of search results for selective pressure
