Final answer:
The minimum number of common ridge characteristics for a match between prints is three. These unique characteristics are used in forensic science for fingerprint analysis.
Step-by-step explanation:
The minimum number of common ridge characteristics for there to be a match between prints is three. These ridge characteristics are unique to each individual and are used in forensic science for fingerprint analysis. By comparing the patterns, shapes, and positions of ridge characteristics, forensic experts can identify matches between prints.
For example, if two prints have at least three common ridge characteristics in the same position and shape, it suggests that the prints were made by the same individual. However, it's important to note that more common ridge characteristics strengthen the match and increase the likelihood of a positive identification.
In forensic investigations, experts use advanced techniques and software to analyze and compare ridge characteristics accurately, considering hundreds of such characteristics in order to make reliable identifications.