3m 26sLänge

NDSU Virtual Cell Animations Project animation 'Lac Operon'. For more information please see http://vcell.ndsu.edu/animations The Lac Operon is an example of an inducible system of gene expression. Its default state is to be inactive. Only when the right catalyst is added to the system, in this case the sugar lactose, is the process activated, allowing the genes in question to be expressed.