The following is an edited excerpt.
The police in Marseille France are struggling to solve a sexual assault case. They have solid video evidence and have even matched DNA from the crime scene with two suspects but they still can’t figure it out.
See, the problem is that the suspects are identical twins. Identical twins look pretty similar so video evidence can’t usually be used to tell them apart. And identical twins share the same DNA so conventional DNA tests can’t be used either. The police are in a real pickle.
Except that they don’t have to be. There are less conventional tests that can find the few differences between the DNA of identical twins.
Read the full post here: Genetic Sleuthing, Or How To Catch The Right Identical Twin Criminal