Noise and Delays Explain Why Some Genes Oscillate in Activity

Noise and Delays Explain Why Some Genes Oscillate in Activity [News & Events]: "In a paper in Proceedings of the National Academy of Sciences released online Sept. 30, the scientists led by bioengineering professor Jeff Hasty and research scientist Lev Tsimring reported that unscripted biochemical variations, or noise, combined with time delays in certain biochemical reactions may lead to oscillations in gene regulation that couldn�t otherwise be predicted. Such noise is routinely described by cell biologists who record large phenotypic differences between supposedly identical cells in a single flask of growth medium. "