Biology Reference
In-Depth Information
Crime scene
profiles
Individual's
profiles
Matching
Potential matches:
-
Crime scene to suspect
-
Crime scene to crime scene
- Sus
pect to suspect
Figure 10.1
Following entry onto the database the new samples are searched against all other
samples on the NDNAD. Suspect to suspect matches will only occur when individuals have given
incorrect details to the police about their identity unless a coincidental match occurs; to date no
coincidental matches have been reported with a full SGM Plus
DNA profile
Scene-subject match
Detections when a DNA match available
Additional detections following DNA match
DNA-related detections
60 000
50 000
40 000
30 000
20 000
10 000
0
2001/02
2002/03
2003/04
2004/05
2005/06
2006/07
2007/08
2008/09
Year
Figure 10.2
Number of cases are shown where a scene-subject match was recorded along with
the cases that involved DNA evidence [8]; matches are not necessarily to a suspect and can be to
people with a legitimate reason to be at the crime scene. Detections are shown where the crime
was cleared up and a DNA match was available. Additional detections are achieved through the
DNA link, for example when a suspect admits to further offences under questioning
