This is a murder case with a DNA sample from the crime scene. Initial tests on Y-STR showed a partial match to a male accused. A subsequent test on “supposedly” the same sample showed a female AMEL result.
Can a DNA sample "morph" from male to female or is this evidence that the police altered the DNA sample and substituted a different sample on the first test? The first test is in question because the arresting detective took an extra DNA sample when the accused was arrested.
Is there a Forensic DNA book or paper which comments about this situation? I have DNA Forensic Typing by John M. Butler if that book can provide the information. If this morphing is possible, under what circumstances can it occur?
Click here to read or post comments