If a Foreign Gene is Cloned into an Expression Host

Question

If a foreign gene is cloned into an expression host, it is important that the host itself
A) not produce the protein being studied.
B) produce the protein in larger amounts than the vector.
C) repress the genetic expression being studied.
D) produce signal proteins to tag the host protein.

Accepted Answer

If the host itself produces the protein being studied, it would be difficult to distinguish between the foreign protein and the host protein. Therefore, it is important that the host does not produce the protein being studied.