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.
We use them to talk about distance. There is no difference in meaning between them. Furthest is more common than farthest : The furthest galaxies are about three thousand million light years away. Go on, boys! Letâs see who can run furthest. Viv took a corner seat farthest away from the door.