1. After examining the DNA fingerprint of the victim and then the seven suspects, which

suspect committed the crime? How did you determine this?

Any suspect whose DNA fingerprint matches with that of the victim committed the crime.

Explanation:

Taking a cold blood murder perpetrated by a suspect with a knife as an example. To know the real murderer among 7 suspects, A DNA fingerprint is conducted on the knife used and whoever matches with the DNA fingerprint on the knife committed the crime.