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.
DNA was discovered as a major chemical of the nucleus at about the same time Mendel and Darwin published their work. However, during the early 1900s, proteins were considered better candidates as molecules able to transmit large amounts of hereditary information from generation to generation.