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.
A prime number is a number that is divisible by 2 positive integers - itself and one. The prime numbers from 1-100 are: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97. 1 is not a prime number because 1 is divisible by one positive integer, 1. 0 is not a prime number because it is divisible by an infinite number of positive integers.