Molecular Biology of the Gene 7th Edition by Richard Losick, James Watson, Michael Levine, Tamara Baker, Alexander Gann

Exercise 1

Predict the level of transcription of the trp operon genes (low or high) in the presence of low levels of tryptophan in Escherichia coli cells bearing an in-frame deletion of the two trp codons that are usually found in the leader peptide. Explain your answer.