DNA sequence affects mutation rate
A new linkurl:report;http://genome.cshlp.org/content/early/2010/05/11/gr.103283.109.abstract published today in __Genome Research__ shows that the DNA molecule itself influences its own mutation rate. Specifically, Jean-Claude Walser and Anthony Furano from the National Institutes of Health and the University of Basel found that sequences high in C and G encourage mutations, and even encourage particular types of mutations. The findings suggest that mutation rate stems from the nitrogenous base sequence itself, not the specific location of particular sequences on chromosomes (since some regions accumulate mutations faster than others). Top 10 on "Species Idol" announced
A committee of taxonomists and the International Institute for Species Exploration at Arizona State University have picked the top 10 new species identified in 2009. The list includes a fanged minnow (dubbed __Danionella dracula__, naturally), which marks the first time scientists have spotted oral teeth in this family, the largest among freshwater fishes. Other picks include...
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