Randomness in Gene Expression

Recent research has found that the expression of certain "housekeeping" genes is random. While it is clear that certain genes are activated by certain outside factors, the genes responsible for proteins that regulate cell function are very random. In fact, it seems that these genes are not only expressed randomly, but that they do not communicate with each other or affect each other's expression in any way. The most interesting part is that this randomness works. Despite this lack of communication, the cells manage to produce enough proteins to continue function. These findings are important because they shows that the cells are able to function in a random environment and could help explain adaptation abilities.

http://www.sciencedaily.com/releases/2010/12/101205202508.htm