RNA Not Always Faithful Copy of DNA

Researchers have upended a central tenet of biology by showing that there are more than 10,000 sites in the human genome where RNA sequences do not match the DNA sequences from which they are transcribed. The findings were published 19 May in Science.Scientists generally assume that DNA sequences are faithful blueprints of the proteins produced by a cell. The new study has stirred up much controversy because it suggests that DNA is more like a rough sketch that is embellished by as yet unknown cellular mechanisms.Read more at...SFARI, June 2011.