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.
Now, two radially opposite points on the equator will be most distant to each other. And the distance needs to be measured in a circumferential path along the equator. So, the farthest distance in the world is 3.14*3963 miles = 12443.82 miles i.e. 19910 km. PS. Cases with larger distances are possible depending upon the path of travel and location of two points on the Earth.