One name that jumps out from the list above: Philip Morris Companies Inc, one of the world's largest manufacturers of cigarettes and tobacco products. Philipmorris.com states: The Philip Morris name has long been associated with high quality tobacco products and globally recognized cigarette brands.
A type of gene expression control in bacteria. Transcription of a gene under this type of control is induced only when a repressor protein present in the cell is inactivated.
Regulating Genes. This interactive activity from NOVA examines how mutations in different regions of an organism's DNA affect gene expressionâwhether genes are turned on or off during the organism's development. An animated model depicts two DNA segments in the nucleus of a fertilized egg.