Scientific Basis of DNA Technology (From DNA and Criminal Justice, P 1-12, 1990, Julia Vernon and Ben Selinger, eds. -- see NCJ-127660)

• NCJ Number: 127661
• Author(s): B Sellinger; E Magnusson
• Date Published: 1990
• Length: 12 pages
• Sale Source: Australian Institute of Criminology
• Publication Type: Survey
• Language: English
• Country: Australia

Annotation

DNA profiling, as used in forensic science, has a high discrimination power and is therefore used to eliminate and identify suspects. Although DNA profiling is similar to conventional blood grouping, the increase in discrimination power makes it possible for more definite factual statements to be made.

Abstract

The basic concept behind DNA profiling is that the DNA sequence in an individual's cell is unique, except in the case of identical twins. DNA cutting enzymes can identify certain pieces of DNA code and probes can visualize the sequences on photographic film. The experimental technique used in the laboratory consists of a large number of simple steps which must be performed meticulously. The interpretation of the data rests upon a comparison of the profiles obtained from the crime scene and the control profiles. However, the technology is not foolproof; it can only be as reliable as the original sample and technician's skill. 9 notes and 4 references