ttles, telephone mouthpieces and bite marks found at crime scenes. Urine DNA sampling from urine is not very common. Since healthy individuals do not shed nucleated cells into urine. Conventional testing is more likely to give results and is used to test for drug use.Products of Conception- When a teenaged girl has been impregnated by a relative or other adults the non-living product must be analyzed. As well as in a rape or anything resulting in pregnancy. How did the forensic use of DNA start?Alec Jeffreys , a geneticist at the University of Leicester in Britains Midlands, started forensic use of DNA. He invented the techniques that took human identification from the laboratory to the courtroom in 1984. He called the process DNA fingerprinting which is not used by most forensic scientists because it can be misleading. He applied his techniques to an immigration case. A boy from Ghana wanted to emigrate to Britain, claiming his mother was already a resident. A DNA analysis showed that the two were in fact related and the Home Office put its stamp of approval on the new technology....