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.
The point closest to the Earth is called perigee, while the point farthest from the Earth is known as apogee. The average distance between these two points is 382,500 km or 237,700 miles. When a full or new Moon is at apogee it's called a Micromoon, Minimoon or Apogee Moon. Micromoon looks approximately 14% smaller than a Supermoon. Because it is further away, the illuminated area appears 30% smaller, so it might look a little less bright. In reality however, there is no difference in the actual size of the Moon whether it is a supermoon, a Micromoon or an ordinary full Moon.