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.
We've sequenced it, modified it for our food, and built billion-dollar companies on it. But until now, no one has ever seen a photograph of it. It, of course, is our genetic code, stored along strands of DNA and structured in a double helix. In 1953, when James Watson and Francis Crick first devised DNA's famous shape, they relied heavily on theory, intuition, and Photo 51, a vague image of DNA produced by x-ray diffraction.