AN EXPERT witness has said the probability of DNA found on a man’s fingernails not coming from a girl accusing him of sexual assault is one in a billion.
The complainant alleges she was the victim of sexual assaults by two men after she woke up on a sofa in a shared house in Cowley Road, Oxford, in the early hours of December 17, 2011.
Bilal Ahmed, 27, and 26-year-old Mustafa Ahmed, from London, are on trial at Oxford Crown Court, accused of sexual assault.
Bilal’s cousin Zeeshan Ahmed, of Palmer Road, Wood Farm, Oxford, has been charged with perverting the course of justice.
Yesterday Janet Manners, a scientist at LGC Foreniscs, said DNA which closely matched the profile of the complainant was found on fingernails on both of Bilal Ahmed’s hands.
She said: “The level of the DNA of the swabs taken shows that they are likely to be from a bodily fluid.”
Abigale Husbands, prosecuting, asked if it could have been transferred on to his hands some other way, such as if he touched a wet patch containing DNA and then touched his other hand.
The expert witness replied that it could have been, but added: “It seems a strange thing to do, to get something on one hand and then wipe it on the other.”
And asked by defence barrister Colin Aylott, representing Bilal Ahmed, from Maidenhead, if it was possible scientifically to establish how the DNA had been transferred she told him: “No.”
All three defendants deny the charges.
The case continues.