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.
Deimos is the smaller of Marsâ two moons, and is one of the smallest moons in the solar system. Deimos is 12 km in diameter, and is more than twice as far away from Mars as Phobos is. Because it is significantly further away, Deimos takes over 30 hours to orbit Mars once. Deimos, like Phobos, has an irregular shape.