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All Articles Tagged As: genetic mutation
A team of researchers has developed a new theory, which suggests that life may not always be optimal, at least in the long run.
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 | Team proposes an interesting hypothesis: Bdelloid rotifers have been able to give up sex and survive because they have evolved an extraordinary efficient mechanism for repairing harmful mutations to their DNA ...> Full Article |
Higher organisms do not have a "cost of complexity" - or slowdown in the evolution of complex traits
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 | New DNA research has questioned previous notions about the evolution of the tuatara. ...> Full Article |
Did modern birds originate around the time of the dinosaurs' demise, or have they been around far longer?
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 | New research shows that people with blue eyes have a single, common ancestor. A team at the University of Copenhagen have tracked down a genetic mutation which took place 6-10,000 years ago and is the cause of the eye colour of all blue-eyed humans alive on the planet today. ...> Full Article |
 | Cells keep a close watch over the transcriptome - the totality of all parts of the genome that are expressed in any given cell at any given time. Researchers at the Salk Institute for Biological Studies and the University of Missouri-Kansas City teamed up to peel back another layer of transcriptional regulation and gain new insight into how genomes work. ...> Full Article |
 | The evolution of new genes is not the only way for a species to change. The loss of genes may also lead to adaptations that help species survive, but this idea has not been well studied. Now, scientists at the University of California, Santa Cruz, have carried out the first systematic computational analysis to identify long-established genes that were lost during the millions of years of evolution leading to the human species. Their findings appear in the December 14 issue of PLoS Computational Biology. ...> Full Article |
 | Piranhas inhabit exclusively the fresh waters of South America. Their geographical distribution extends from the Orinoco River basin (Venezuela) to the North, down to that of the Paraná (Argentina) to the South. Over this whole area, which also embraces the entire Amazon Basin, biologists have recorded 28 carnivorous species of these fish (2). In spite of the evolutionary success of this subfamily of fish, the mechanisms that generated the species richness of this group are still insufficiently known. ...> Full Article |
Researchers discovered genetic evidence that human evolution is speeding up - and has not halted or proceeded at a constant rate, as had been thought - indicating that humans on different continents are becoming increasingly different.
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 | When habitat changes, animals migrate. But how do immobile organisms like plants cope when faced with alterations to their environment? This is an increasingly important question in light of new environmental conditions brought on by global climate change. ...> Full Article |
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