ScienceDaily: Top Science News |
- New data reveal extent of genetic overlap between major mental disorders
- Greenland ice is melting -- even from below: Heat flow from the mantle contributes to the ice melt
- Rethinking the genetic code
| New data reveal extent of genetic overlap between major mental disorders Posted: 11 Aug 2013 12:08 PM PDT The largest genome-wide study of its kind has determined how much five major mental illnesses are traceable to the same common inherited genetic variations. Researchers found that the overlap was highest between schizophrenia and bipolar disorder; moderate for bipolar disorder and depression and for ADHD and depression; and low between schizophrenia and autism. Overall, common genetic variation accounted for 17-28 percent of risk for the illnesses.  |
| Greenland ice is melting -- even from below: Heat flow from the mantle contributes to the ice melt Posted: 11 Aug 2013 12:06 PM PDT The Greenland ice sheet is melting from below, caused by a high heat flow from the mantle into the lithosphere. This influence is very variable spatially and has its origin in an exceptionally thin lithosphere. Consequently, there is an increased heat flow from the mantle and a complex interplay between this geothermal heating and the Greenland ice sheet. New research finds that this effect cannot be neglected when modeling the ice sheet as part of a climate study.  |
| Posted: 11 Aug 2013 12:05 PM PDT A decade ago, gene expression seemed so straightforward: genes were either switched on or off. Not both. Then in 2006, a blockbuster finding reported that developmentally regulated genes in mouse embryonic stem cells can have marks associated with both active and repressed genes, and that such genes, which were referred to as "bivalently marked genes", can be committed to one way or another during development and differentiation.  |
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