(a)List the three steps involved in Polymerase Chain reaction

(b)Name the source organism of Taq polymerase. Explain the specific role of this enzyme in PCR

(a)(1)Denaturation (2) Annealing (3)Extension.
(b)Thermus aquaticus, it remains active during the high temperature, (induced to denature double stranded DNA) and catalyse polymerisation of DNA.