Add Yahoo as a preferred source to see more of our stories on Google. Conventional DNA testing failed to distinguish between twin brothers during a French criminal trial. (Denis Charlet/AFP via Getty) ...

A pair of police officers with the word "POLICE" written on the back of their jackets walk through a historic back alley. The 33-year-old identical twins are accused of conspiring to plot the murders ...

Letter: Prof Michael Krawczak says the required molecular genetic testing comes at a cost, but should not be ruled out as it was in a recent court case ...

Identical, or monozygotic, twins develop from the same fertilized egg that splits into two. These twins are the same sex and share the same genes. Sometimes called paternal twins, identical twins ...

An identical twin commits a crime and leaves their DNA at the scene. Can DNA testing reveal which twin is the culprit? This question reportedly came up in a case in France last month, in which the DNA ...