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 United States first adopted peacetime conscription with the Selective Training and Service Act of 1940. The act provided that not more than 900,000 men were to be in training at any one time, and it limited service to 12 monthsâlater (1941) extended to 18 months. new selective service act was passed in 1948 that required all men between 18 and 26 to register and that made men from 19 to 26 liable for induction for 21 months' service, which would be followed by 5 years of reserve duty.