question_answer

Match column-I with column-II and select the correct answer using the codes given below.

	Column-I		Column-II
A.	Operator site	I.	Binding site for RNA polymerase
B.	Promoter site	II.	Binding site for repressor molecule
C.	Structural gene	III.	Codes for enzyme protein
D.	Regulator gene	IV.	Codes for repressor molecules

A) A-II;    B-I;     C-III;    D-IV

B) A-II;    B-I;     C-IV;    D-II I

C) A-IV;   B-III;   C-I;      D-II

D) A-II;    B-III;   C-I;      D-IV