Question

fingerprints are the result of oil and secretions from skin mixing with dirt. true false fingerprints are considered to be a form of class evidence. true false it is necessary to obtain a full print from a suspect in order to match his fingerprint with a fingerprint found at the crime scene. true false

Explanation:

1. Fingerprints form when oils/sebum from skin ridges transfer to surfaces, with dirt adhering to this residue; the core cause is the skin secretions, so the statement is accurate.
2. Fingerprints are individual evidence, not class evidence—class evidence groups people, while fingerprints uniquely identify an individual, so the marked answer is incorrect.
3. Partial fingerprint matches are valid in forensics if there are sufficient unique ridge characteristics, so a full print is not required, making the marked answer incorrect.

Answer:

1. True
2. False
3. False