News. The invention of the Polymerase Chain Reaction (PCR) radically changed biology. The technique was considered so important that the Nobel Prize was awarded to its inventor, Kary Mullis, in 1993.Thanks to this technique, very small samples of DNA (from as little as a single cell) can be analyzed.ews. The invention of the Polymerase Chain Reaction (PCR) radically changed biology. The technique was considered so important that the Nobel Prize was awarded to its inventor, Kary Mullis, in 1993.
The smallest prime number, according to primality as defined by modern mathematicians, is 2. To be prime, a number must be divisible only by itself and 1. All other numbers are known as composites.
Prime Numbers. A prime number is a whole number greater than 1 that is divisible only by 1 and itself (the remainder is 0). For example the first ten primes as: 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29. For example, the only numbers that divide into 5 are 1, and 5.