Bio211 Unit 2 Class 4 - Gene Regulation

What type of modification would you expect to be more abundant in DNA that is actively being transcribed?

• histone acetylation

• DNA methylation

Which type of RNA is encoded in the eukaryotic genome and can regulate transcription of multiple genes?

• miRNA

• siRNA

• mRNA

• tRNA

Which of the following is a part of the DNA sequence where a repressor is bound?

• Promoter

• Operator

• Activator-binding site

• Inducer

When lactose binds to the repressor protein for the lac operon, what happens?

• Repressor is stabilized on the DNA and blocks transcription of the operon

• Repressor no longer binds to DNA

• Repressor binds to RNA polymerase to lock it into the inactive position

• Repressor binds to RNA polymerase to lock it into the active position