What Is the Primary Mechanism (Or Timing)involved in the Shutdown

Multiple Choice

What is the primary mechanism (or timing) involved in the shutdown of the host gene expression that occurs in bacteria infected by phage T4?

A) The host genes are turned off because the phage encodes repressors shutting off the host genes.
B) The host genes are turned off because the phage polymerase competes with the host polymerase.
C) The host genes are turned off because the phage interferes with activators required for production of host genes.
D) The shutdown of host gene expression occurs after transcription.
E) The shutdown of host gene expression occurs after translation.