The lacI gene is expressed in what way?
AOnly if lactose is present
BOnly if glucose is absent
CConstantly, at all times
DNever, at any time
Answer & Solution
Correct answer: C. Constantly, at all times
The repressor gene is always expressed, giving a steady supply of repressor.
Related questions
Besides allolactose, which artificial inducer binds the lac repressor?At which level does the lac operon control gene expression?The lac repressor is an allosteric protein. What does this mean?Which was the first genetic regulatory mechanism to be understood clearly?The lac repressor is made of how many identical subunits?Sequential use of glucose then lactose in two growth phases is called what?How does the cAMP level relate to glucose availability?Lac genes are co-transcribed into which kind of mRNA?