Question
Question: The external sypply of tryptophan in Escherichia coli brings about...
The external sypply of tryptophan in Escherichia coli brings about
A
Switching on of lac operon
B
Switching off of lac operon
C
Switching on of tryptophan operon
D
Switching off of tryptophan operon
Answer
Switching off of tryptophan operon