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Genes can be turned on and off: regulation of gene expression

Genes can be turned on and off: regulation of gene expression

This is a chapter of the larger site "DNA from the beginning". This section discusses discovery of mechanisms of gene regulation. It details both positive and negative regulation in classic example, the lac operon. The material is taught by explaining the experiments that resulted in our understanding of this subject. For all of the modules of the larger site, the science behind each concept is explained using animations, an image gallery, video interviews, problems, biographies, and links. There are three sections, Classical Genetics, Molecules of Genetics and Organization of Genetic Material. Key features are the clear explanations of classical experiments and the excellent photographs of researchers and their labs.

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