Dna of the guilty suspect could be obtained from all of the following except *the handle of a carpenter's hammer used in the crime
*the steering wheel of the suspect's car
*the doorknob of the room where the crime took place
*the suspect's online bank account

The suspect´s online bank account.

Explanation:

All the other options could be charged with suspect´s DNA because they were all instruments used during the crime. They are part of what is called the crime scene. These types of scenes contain physical evidence about who committed the crime and how it was perpetrated.

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