If you're shooting a university's graduation, then odds are that most of the people in attendance are from out of town and plan to leave soon. In addition to the camera, tripod and flash, you should also have a great photo printer so that you can deliver the goods on the same day.
Polymerase chain reaction. Polymerase chain reaction, (PCR), a technique used to make numerous copies of a specific segment of DNA quickly and accurately.
DNA fragments are most commonly amplified using a technique called polymerase chain reaction, or PCR. In PCR, a special DNA-replicating enzyme called a polymerase is used â¦to copy short pieces of DNA over and over again, increasing the number of fragments exponentially with each cycle.