Increased migration rate observed in DNA from evidentiary material precludes the use of sample mixing to resolve forensic cases of identity.

The analysis of restriction fragment length polymorphisms in forensic DNA samples can be used to determine whether any two or more samples have the same biological origin. However, sometimes DNA recovered from evidentiary material, such as blood or semen stains, migrates at a different rate than an exemplar sample. This difference in migration, while… CONTINUE READING