Polymerase chain reaction (PCR) is a laboratory technique used to amplify DNA sequences. The method involves using short DNA sequences called primers to select the portion of the genome to be amplified.olymerase chain reaction (PCR) is a laboratory technique used to amplify DNA sequences. The method involves using short DNA sequences called primers to select the portion of the genome to be amplified.
The smallest possible size for anything in the universe is the Planck Length, which is 1.6 x10-35 m across.
Approximately 161,761,143 miles (about 260,329,324 kilometres) Comments: Obviously, the distance is very similar to that between Venus and Earth. That distance varies as the pâ¦lanets move in their orbits. So, it's changing all the time. The minimum distance is about 25 million miles.