Which fingerprint pattern typically contains a clear recurving ridge at its core?

The fingerprint pattern that typically contains a clear recurving ridge at its core is the loop. Loops are characterized by the fact that they have one or more ridges that enter from one side of the pattern, curve around, and exit from the same side. This central recurving ridge is key to defining a loop, which distinguishes it from other patterns.

In comparison to other patterns, whorls do not solely feature a recurving ridge; rather, they consist of circular or spiral patterns with at least two deltas, making them distinct. Arches, on the other hand, create a rise in the center but do not have the pronounced recurving ridge that loops do. Deltas are points of divergence in ridge patterns and are found in whorls and loops but do not represent a specific ridge pattern on their own.

Overall, the looping pattern is unique in its clear central recurving feature, which is its defining characteristic.