News tagged with evolutionary biologists
In amoeba world, cheating doesn't pay
Oct 01, 2009 |
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(PhysOrg.com) -- Cheaters may prosper in the short term, but over time they seem doomed to fail, at least in the microscopic world of amoebas where natural selection favors the noble.
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Origin of birds confirmed by exceptional new dinosaur fossils
Other Sciences / Archaeology & Fossils
Sep 25, 2009 |
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(PhysOrg.com) -- Chinese scientists today reveal the discovery of five remarkable new feathered dinosaur fossils which are significantly older than any previously reported. The new finds are indisputably older ...
Why Female Water Buffalo Have Horns but Impala Do Not?
Sep 17, 2009 |
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(PhysOrg.com) -- The reason some female hoofed animals have horns while others do not has long puzzled evolutionary biologists, even the great Charles Darwin. But now a survey of 117 bovid species led by Ted Stankowich, professor ...
Biologists identify the molecular basis of high-altitude adaptation in mice
Aug 10, 2009 |
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(PhysOrg.com) -- Biologists have long known how adaptive evolution works. New mutations arise within a population and those that confer some benefits to the organism increase in frequency and eventually become ...
Dogs, maybe not, but old genes can learn new tricks
May 11, 2009 |
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A popular view among evolutionary biologists that fundamental genes do not acquire new functions was challenged this week by a new study in the Proceedings of the National Academy of Sciences.
In Ocean's Depths, Heat-Loving 'Extremophile' Evolves a Strange Molecular Trick
Apr 30, 2009 |
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(PhysOrg.com) -- Making its home near extreme temperatures of thermal vents on the ocean floor, the organism Methanopyrus kandleri harbors a molecular secret that intrigues evolutionary biologists and even ...
Darwin's Tree of Life May Be More Like a Thicket
Biology /
Jan 27, 2009 |
4.8 / 5 (9) |
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(PhysOrg.com) -- In On The Origin of Species, Darwin used the image of a tree of life to illustrate how species evolve, one from another. Even today, branches sprouting from lower branches (representing ancest ...
