PCR (PCR) stands for Polymerase Chain Reaction is a technique often used in research in Molecular Biology (Molecular. biology) often PCR (PCR) is. The process of synthesizing a piece of DNA (DNA) in vitro. By the way, synthetic mimics of DNA (DNA) of an organism. The technique PCR (PCR) is Karry Mullis which researchers often use PCR (PCR) is to increase the amount of genetic material or DNA (DNA) using a PCR machine or Thermal cycler is. Help reaction PCR (PCR), there are three key steps are 1. Denaturing is a process of separation (DNA) was the double helix or Double Strand DNA (the state Native DNA) by increasing the temperature slowly into DNA. (DNA) or single Single Strand DNA (a condition Denatured DNA) at a temperature in the range of 90-95 degrees Celsius second. Annealing is a process of slowly cooling down and put Phoenix Mercury (Primer, short dna) into the system. To make the island a pair of bases (Complementary base pair) between Prime Mercury (Primer) with Template DNA by using a temperature in the range of 37-60 degrees Celsius, three. Extension is the process of inserting DNA polymerase into the system to achieve the synthesis of DNA (DNA) new line or increase the amount of acid (DNA) more. The temperature was in the range of 72-75 degrees Celsius.