Rethinking the genetic code

[unable to retrieve full-text content]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.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/health_medicine/genes/~3/nGoe92EEM04/130811150538.htm

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