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.
it is at its brightest when the venus distance from earth is the smallest the planet can be easy to see when the sun is low on the horizon it always lies about 47 from the sun the planet orbits faster than the earth so overtakes it every 584 dayshis is the closest that any planet comes to earth the farthest that venus ever gets from earth is 261 million km the means that the venus distance from earth can vary by an incredible 223 million km