News tagged with evolutionary events
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Search results for evolutionary events
Researchers reveal secrets of duck sex: It's all screwed up
Dec 23, 2009 |
3.9 / 5 (11) |
0
Female ducks have evolved an intriguing way to avoid becoming impregnated by undesirable but aggressive males endowed with large corkscrew-shaped penises: vaginas with clockwise spirals that thwart oppositely ...
Fossil shelved for a century reworks carnivore family tree
Other Sciences / Archaeology & Fossils
Dec 22, 2009 |
4.5 / 5 (8) |
4
More than a hundred years after its discovery, the limbs and vertebrae of a fossil have been pulled off the shelf at the American Museum of Natural History to revise the view of early carnivore lifestyles. ...
Anemia drug not helpful for kidney disease patients
Dec 22, 2009 |
not rated yet |
1
An international study authored by a UT Southwestern Medical Center researcher has concluded that the anemia drug darbepoetin alfa works no better than a placebo in several other applications previously thought to be promising.
Glowing channels: Microanalysis system for rapid mercury detection
Chemistry / Analytical Chemistry
Dec 22, 2009 |
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0
(PhysOrg.com) -- Water contaminated with mercury is very dangerous for both people and the environment, as mercury is one of the most toxic heavy metals. Though laboratory analyses do deliver precise quantitative measurements, ...
Link Between Poor Sleep and Poor Learning in Older Adults Investigated
Medicine & Health / Psychology & Psychiatry
Dec 22, 2009 |
4.5 / 5 (2) |
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(PhysOrg.com) -- Researchers at the University of Massachusetts Amherst are trying to decode why aging prevents sleep from enhancing memory. Rebecca Spencer, assistant professor of psychology, says she is trying to isolate ...
Gefitinib improves survival compared with standard chemotherapy in lung cancer patients with genetic mutation
Dec 20, 2009 |
5 / 5 (1) |
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Patients with the most common form of lung cancer (non-small-cell lung cancer) who have mutations in the epidermal growth factor receptor (EGFR) gene have significantly improved progression-free survival if they are treated ...
Seeing how evolutionary mechanisms yield biological diversity
Dec 22, 2009 |
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An international team of scientists has discovered how changes in both gene expression and gene sequence led to the diversity of visual systems in African cichlid fish.
Genetic study clarifies African and African-American ancestry
Dec 21, 2009 |
4.8 / 5 (11) |
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People who identify as African-American may be as little as 1 percent West African or as much as 99 percent, just one finding of a large-scale, genome-wide study of African and African-American ancestry released ...
The past matters to plants
Dec 21, 2009 |
4.7 / 5 (3) |
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(PhysOrg.com) -- It's commonly known that plants interact with each other on an everyday basis: they shade each other out or take up nutrients from the soil before neighboring plants can get them. Now, researchers ...
Microcephaly genes associated with human brain size
Dec 21, 2009 |
3.7 / 5 (3) |
1
A group of Norwegian and American researchers have shown that common variations in genes associated with microcephaly - a neuro-developmental disorder in which brain size is dramatically reduced - may explain differences ...
List of search results for evolutionary events
