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.
Differential Gene Expression. Gene transcription is regulated on multiple levelsÍ¾ including elements. within the DNA sequence and outside of it. Gene messages are extensively processed and modified. prior to translation. Transcriptional regulation often involves modification of chromatinÍ¾. specifically, changes in acetylation and methylation of histone. Development requires precise control of gene expression. in both location and time. Variation or changes in either internal or external regulatory elements. increases the range and complexity of possible developmental outcomes.