News tagged with random mutations
'Sloppier copier' surprisingly efficient
Jul 15, 2009 |
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The "sloppier copier" discovered by USC biologists is also the best sixth man in the DNA repair game, an article in the journal Nature shows.
Experts: Mild swine flu could quickly turn deadly
May 05, 2009 |
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(AP) -- A flu virus is a powerhouse of evolution, mutating at the maximum speed nature allows. A mild virus can morph into a killer and vice versa.
Modern life's pressures may be hastening human evolution
Apr 13, 2009 |
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We're not finished yet. Even today, scientists say that human beings are continuing to evolve as our genes respond to rapid changes in the world around us. In fact, the pressures of modern life may be speeding up the pace ...
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Study questions 'cost of complexity' in evolution
Biology /
Mar 31, 2008 |
4.3 / 5 (6) |
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Higher organisms do not have a “cost of complexity” — or slowdown in the evolution of complex traits — according to a report by researchers at Yale and Washington University in Nature.
Probing question: What is a molecular clock?
Biology /
Nov 20, 2008 |
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It doesn't tick, it doesn't have hands, and it doesn't tell you what time of day it is. But a molecular clock does tell time -- on an epoch scale. The molecular clock, explained S. Blair Hedges, is a tool ...
Humans are reason for why domestic animals have strange and varied coat colors
Biology /
Jan 16, 2009 |
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(Physorg.com) -- Humans have actively changed the coats of domestic animals by cherry-picking rare genetic mutations, causing variations such as different colours, bands and spots, according to a new study. ...
New study offers insight into possible cause of lymphoma
Feb 14, 2008 |
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The immune system's powerful cellular mutation and repair processes appear to offer important clues as to how lymphatic cancer develops, Yale School of Medicine researchers report this week in Nature.
Simulator allows scientists to predict evolution’s next best move
Biology /
Oct 30, 2008 |
4.5 / 5 (2) |
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(PhysOrg.com) -- Biologists today are doing what Darwin thought impossible. They are studying the process of evolution not through fossils but directly, as it is happening. Now, by modeling the steps evolution takes to build, ...
Cancer cells more likely to genetically mutate
Feb 19, 2007 |
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When cells become cancerous, they also become 100 times more likely to genetically mutate than regular cells, researchers have found. The findings may explain why cells in a tumor have so many genetic mutations, but could ...
Study sheds light on evolution of human complexity
Nov 03, 2009 |
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(PhysOrg.com) -- A painstaking analysis of thousands of genes and the proteins they encode shows that human beings are biologically complex, at least in part, because of the way humans evolved to cope with redundancies arising ...
Evolution on the table top
Biology /
Apr 08, 2008 |
4.4 / 5 (19) |
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Evolution has taken another step away from being dismissed as “a theory” in the classroom, thanks to a new paper published this week in the online open-access journal PLoS Biology. The research article, by Brian Paegel and Ge ...
Computational process zeroes in on top genetic cancer suspects
Sep 01, 2009 |
not rated yet |
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Johns Hopkins engineers have devised innovative computer software that can sift through hundreds of genetic mutations and highlight the DNA changes that are most likely to promote cancer. The goal is to provide ...
Therapeutic cloning gets a boost with new research findings
Mar 25, 2009 |
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A paper by San Antonio and Honolulu researchers offers the first direct demonstration that cloning by somatic cell nuclear transfer does not lead to an increase in the frequency of point mutations.
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