(i) Identify A and B illustrations in the following

(i) Identify A and B illustrations in the following.
(ii) Write the term given to A and C; and why?
(iii) Expand PCR. Mention its importance in biotechnology.

(i) vi-Recognition site of the restriction endonuclease. 5-rop gene that codes for the protein involved in replication of plasmid.
(ii) A and C are palindromic sequences, as the sequence of base pairs reads the same on the two strands when the oriention of reading is kept same.
(iii) PCR stands for Polymerase Chain Reaction, is used to amplify DNA segments to a large number within a short span of time.