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.
On this day in History, Watson and Crick discover chemical structure of DNA on Feb 28, 1953. Learn more about what happened today on History. On this day in History, Watson and Crick discover chemical structure of DNA on Feb 28, 1953.