News & Views

A Forensic Market in Flux

Looking down the microsocpe

Over three and a half years on from the closure of the Forensic Science Service, and you might be forgiven for thinking that the market for forensic services would have settled down.  However, it would appear that things are as changeable as ever as budget cuts bite, the money spent on forensic science shrinks further and the long promised government strategy for forensic science has yet to be published.READ MORE

Demonstrating that penetration has occurred when no semen is found: the whys and wherefores of Y-STRs

DNA

Evidence to demonstrate that penile or digital penetration of the vagina has taken place can be difficult to find in some cases.  Traditional DNA profiling techniques can’t really help as the few male cells potentially deposited are overwhelmed by the large amount of female DNA present in the vaginal cells.  Y-STR typing is a form of DNA analysis that targets just the DNA present on the male Y chromosome allowing production of a male Y-STR profile even in the presence of seemingly overwhelming amounts of female DNA.READ MORE

DNA transfer: a question of when and how

DNA transfer shaking hands

In recent years, forensic science has seen a number of significant improvements in the field of forensic DNA analysis.  One of the drivers has been the need to detect ever decreasing amounts of DNA.  The DNA17 technique, in routine use in the UK since July 2014, is designed to be more sensitive than its predecessor SGMPlus, and therefore the spotlight is shining more brightly on the issues around DNA transfer and persistence.READ MORE