News tagged with darwin
A salt-free primordial soup?
Most scientists who study the origin of life assume that it occurred in the ocean. But a minority view is that ions in seawater may interfere with prebiotic chemistry, making a freshwater environment more ...
Jan 19, 2012 |
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'Lost' Darwin fossils rediscovered
A rare collection of fossils, including some collected by Charles Darwin, has been 'rediscovered' at the British Geological Survey (BGS).
Other Sciences / Archaeology & Fossils
Jan 17, 2012 |
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New tool puts plant hormone under surveillance
(PhysOrg.com) -- Charles Darwin was the first to speculate that plants contain hormones. His pioneering research led to the identification of the very first and key plant growth hormone — auxin — ...
Jan 16, 2012 |
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Study shows species can change
A study of South American songbirds completed by the Department of Biology at Queen's University and the Argentine Museum of Natural History, has discovered these birds differ dramatically in colour and song yet show very ...
Dec 08, 2011 |
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Acquired traits can be inherited via small RNAs
Columbia University Medical Center (CUMC) researchers have found the first direct evidence that an acquired trait can be inherited without any DNA involvement. The findings suggest that Lamarck, whose theory of evolution ...
Dec 05, 2011 |
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Dramatic diversity of columbine flowers explained by a simple change in cell shape
Columbine flowers are recognizable by the long, trailing nectar spurs that extend from the bases of their petals, tempting the taste buds of their insect pollinators.
Nov 16, 2011 |
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Known and unknown: Great travellers of the Pacific
When a well-known travel magazine set out to identify the top ten travellers of all time, the names it came up with held few surprises. Top of its list, which encompassed Charles Darwin and Christopher Columbus, ...
Nov 07, 2011 |
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Biologists learn how plants synthesize their growth hormone auxin
Biologists at the University of California, San Diego have succeeded in unraveling, for the first time, the complete chain of biochemical reactions that controls the synthesis of auxin, the hormone that regulates nearly all ...
Oct 24, 2011 |
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A hitchhiker's guide to the Galapagos: co-evolution of Galapagos mockingbirds and their parasites
Along with the famous finches the Galapagos mockingbirds had a great influence on Charles Darwin's theory of evolution. Now, 176 years later, three of the four mockingbird species are among the rarest birds ...
Oct 03, 2011 |
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Tree frogs chill out to collect precious water
Research published in the October issue of The American Naturalist shows that Australian green tree frogs survive the dry season with the help of the same phenomenon that fogs up eyeglasses in the winter.
Sep 29, 2011 |
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Manipulative mothers subdue show-off sons
The gaudy plumage and acrobatic displays of birds of paradise are a striking example of sexual selection, Charles Darwin's second great theory of evolution. But new research shows that this powerful process may collapse when ...
Sep 12, 2011 |
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'Fossil eel' squirms into the record books
A new species of eel found in the gloom of an undersea cave is a "living fossil" astonishingly similar to the first eels that swam some 200 million years ago, biologists reported on Wednesday.
Aug 17, 2011 |
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Scientist finds rapidly adapting fanged frogs
(PhysOrg.com) -- Scientists led by biologist Ben Evans of McMaster University have documented the rapid adaptation of new fanged frog species on the island of Sulawesi, Indonesia.
Aug 16, 2011 |
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'Supergene' is key to copycat butterflies
Since Charles Darwin, biologists have pondered the mystery of "mimicry butterflies", which survive by copying the wing patterns of other butterflies that taste horrible to their predators, birds.
Aug 12, 2011 |
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Famed fossil isn't a bird after all, analysis says
(AP) -- One of the world's most famous fossil creatures, widely considered the earliest known bird, is getting a rude present on the 150th birthday of its discovery: A new analysis suggests it isn't a bird ...
Other Sciences / Archaeology & Fossils
Jul 27, 2011 |
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