Which fingerprint pattern is the least common?

In the context of fingerprint patterns, arches are indeed the least common type when compared to the other patterns listed. Fingerprint patterns are primarily classified into three main categories: loops, whorls, and arches.

Arches are characterized by ridges that enter from one side of the finger, rise in the center, and exit on the opposite side, without forming any significant core or delta. This distinct shape lends itself to a unique fingerprint that is less frequently encountered in the general population. In contrast, both loops and whorls are more prevalent; loops are the most common type, followed by whorls. Swirls are not a formally recognized category in the traditional classification system used for fingerprints.

Understanding the distribution of these patterns helps forensic experts and law enforcement in criminal investigations and identification processes, underscoring the significance of arch patterns being less common among the various fingerprint types.