A pair of twins, a single criminal: DNA tests to solve crimes
One night in November 1999, a 26 -year -old woman was raped in a parking lot in Grand Rapids, Mischigan.Police managed to obtain the aggressor's DNA for a sample of semen, but there were no genetic coincidences in their databases.
The detectives did not find fingerprints on the scene and did not locate any witness.The woman, who was attacked from behind, could not give any description.Apparently they would never find the rapist.
But five years later there was a new finding for the case.A man who served a condemnation for a different sexual crime presented a DNA sample along with his application for probation.The sample coincided with the DNA of the rape scene.
There was only one caveat: the probation applicant had an identical twin and the standard DNA analysis cannot distinguish the identical twins.Prosecutors did not have additional evidence that could rule out either.Since they could not present charges against any, the case is still open almost twenty years later.
