Virus and spyware definitions are files that act like an encyclopedia of known malicious software, including viruses, spyware, and other potentially unwanted software.
Highly accurate DNA parental testing became available in the 1980s with the development of RFLP. In the 1990s, PCR, developed in 1983, became the standard method for DNA parental testing. A simpler, faster, and more accurate method of testing than RFLP, it has an exclusion rate of 99.99% or higher.
Also in 1953, Crick and an American scientist named James Watson made what was probably the biggest discovery of their careers, which was the structure of the DNA molecule. This effort led both men (along with Maurice Wilkins and Rosalind Franklin) to the Nobel Prize in Physiology or Medicine in 1962.