The polymerase chain reaction ( PCR ) is a method for the in vitro amplification of DNA sequences
PCR was conceived and developed in the early 1980s by Kary Mullis ,
The polymerase chain reaction ( PCR ) is a method for the in vitro amplification of DNA sequences and involves automated cycles of denaturation , annealing and extension or synthesis using a thermocycler .
PCR was conceived and developed in the early 1980s by Kary Mullis , who was awarded the Nobel Prize for Chemistry for the invention in 1993 . 1