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Unformatted text preview: If a bacterium has sufficient tryptophan in its environment, some of the tryptophan will bind to the tryptophan synthesis gene repressor molecule, but in contrast to lactose that removes the repressor, the tryptophan synthesis repressor needs tryptophan to fit into position and block transcription....
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This note was uploaded on 12/29/2011 for the course BIO 151 taught by Professor Edwards during the Spring '10 term at SUNY Stony Brook.
- Spring '10