1 Parental testing-to establish if someone is the biological parent of a child. 2  Forensic testing-to help identify suspects or victims in a criminal investigation. 3  Gene therapy-to test parents or foetuses for genetic conditions or birth defects. 4  Genetic genealogy-to find out more about someone's ancestry.NA tests are sometimes the only evidence to prove that a suspect was involved in a crime, or free someone who has been wrongly convicted. It is easy to tell if DNA from two biological samples does not match. But a match doesn't make you totally certain that the two samples come from the same person.
Light switches can be used hundreds of times a year in a home. This constant use can loosen wire connections and eventually wear out the moving parts. Wiring a switch is an easy do it yourself project. Just make sure to turn off the power to the circuit you are working on. A single-pole switch is used to control lights from only one location. The switch has two screw terminals on the body of the switch. Most switches will also have a green grounding screw. A single-pole switch will have ON and OFF marked on the lever. A switch is just a break in the hot wire controlling a light.
The combination of the outlet, wiring, box and labor would be around $100.00 - $150.00. The installation should take less than 30 minutes. A skilled electrician can install a single-pole switch in less than 30 minutes. Wire, a switch, a cover plate a box is needed for this installation.