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.
The very shortest distance from any part of Hawaii to any part of the U.S. west coast seems to be 2,281 miles, from a point on the eastern edge of the island of Hawaii to a small California promontory at north latitude 38o 55' 8.4.