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 are closest to the sun during winter in the northern hemisphere at the minimum distance of 146 million km 91 million miles we are farthest away during winter in the southern hemisphere at the maximum distance of 152 million km 94 5 million milest our closest point to the sun called perihelion about january 4 it s about 91500000 miles and at the farthest point aphelion around july 2 it s about 94500000 miles the distance of the earth from the sun is roughly 93 million miles