ASIS International (ASIS) Professional Certified Investigator Practice Exam

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Which type of fingerprint has no deltas?

Whorl
Arch
Loop
Radial

The correct answer is: Arch

The type of fingerprint that has no deltas is the arch. In fingerprint classification, deltas are ridge formations that are typically found in loop and whorl patterns. An arch is characterized by ridges that enter one side of the finger and exit the other side without forming a core or any triangular structures that would indicate the presence of deltas. The lack of deltas is a defining feature of the arch fingerprint pattern, as arch patterns do not possess the central cores or swirling features that characterize loops and whorls. Instead, the ridges in an arch flow smoothly from one side to the other, creating a wave-like appearance. This distinct characteristic makes arches identifiable and allows forensic specialists to categorize fingerprints efficiently. Understanding these specific traits is essential for anyone working in the field of fingerprint analysis and criminal investigation.