Question:

Answer: When allolactose is present, it induces the inactivation of the lac repressor.

Question: Which of the following is a protein produced by a regulatory gene?

promoter

corepressor

repressor

inducer

operon

Answer: repressor

Question: Transcription of the structural genes in an inducible operon

starts when the pathway’s product is present.

occurs continuously in the cell.

starts when the pathway’s substrate is present.

stops when the pathway’s product is present.

does not result in the production of enzymes.

Answer: starts when the pathway’s substrate is present.

Question:

Answer: The structural genes will be transcribed continuously.

Question: DNA methylation is a mechanism used by eukaryotes to do what?

terminate transcription

cause apoptosis

inactivate genes

increase the rate of transcription

facilitate the binding of DNA to intermediate filaments

Answer: inactivates genes

Question:

Answer: have turned off or slowed down the process of transcription.

Question:

Answer: no AUG in any frame

Question:

Answer: inactivation of the selected genes

Question: The phenomenon in which RNA molecules in a cell are destroyed if they have a sequence complementary to an introduced double-stranded RNA is called

RNA obstruction.

RNA disposal.

RNA targeting.

RNA blocking.

RNA interference.

Answer: RNA interference

Question:

Answer: Changes in technology as well as our ability to determine how much of the DNA is expressed have now made this possible.