At which level does the lac operon control gene expression?
ATranscriptional
BPost-translational
CRNA splicing step
DTranslational only
Answer & Solution
Correct answer: A. Transcriptional
Bacteria lack introns and a nuclear membrane, so regulation acts on transcription.
Related questions
Besides allolactose, which artificial inducer binds the lac repressor?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?The lacI gene is expressed in what way?