PCR Technique Questions

1- What is the main principle and purpose of PCR technique?2- What is Taq Polymerase enzyme? And why its important in PCR?3- What are the reagents needed in PCR?4-Why there are different temperatures with certain time required during the PCR stages? explain5- Draw a schematic of the PCR steps procedure.6- How the PCR products can be measured? 7- What are the types of PCRs?8- What are the clinical uses of PCR technology?