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.
The AncestryDNA autosomal DNA test was launched in the UK and Ireland in January 2015. In January 2015 Ancestry announced that non-subscribers in the US would be required to pay an annual subscription of $49 in order to access the family trees of their matches.