In bacteria, binding of _________ factor to the RNA polymerase increases its affinity for promoter sites in the DNA.

In bacteria, binding of _________ factor to the RNA polymerase increa

1.	In bacteria, binding of _________ factor to the RNA polymerase increases its affinity for promoter sites in the DNA.
A.	alpha
B.	sigma
C.	rho
D.	beta
Answer» C. rho