Answers

MR.B.RAJ
Jul 31, 2020

(i) A-Denaturation of the double stranded DNA.
(ii) B-Primers
(iii) C-DNA polymerase or Taq polymerase.

Importance in PCR
It extends the primers using the nucleotides provided in the reaction medium and the genomic DNA as the template. Taq  polymerase is thermostable and withstands the high temperature used in denaturation process. Repeated amplification of  DNA in PCR is made possible by using thermostable DNA polymerase, which remain active during high temperature.