Gene mutations blamed for many mental disabilities - Sacramento Bee

[**Gene mutations blamed for many mental **disabilities****](http://news.google.com/news/url?sa=t&fd=R&usg=AFQjCNHR6TIWQM0b6tbXsUE8P3HpORMs3g&url=http://www.sacbee.com/2012/09/26/4858124/gene-mutations-blamed-for-many.html)
**Sacramento Bee**
BERLIN -- More than half the cases of severe intellectual **disability** caused by genetic defects are the result of random mutations, not inherited, a European study published Thursday suggests. The findings of the small-scale study give hope to parents **...**

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URL: http://news.google.com/news/url?sa=t&fd=R&usg=AFQjCNHR6TIWQM0b6tbXsUE8P3HpORMs3g&url=http://www.sacbee.com/2012/09/26/4858124/gene-mutations-blamed-for-many.html