What is a fingerprint?
A fingerprint is a fold of skin evolved for better grip
Three Main Types of Fingerprints:
Loops, Arches and Whorls
Loops: The most common type of print; they come in two varieties, ulnar loops and radial loops. Ulnar loops bend to the pinky side of the hand (the ulna bone) as Radial loops bend towards the thumb side (the radius bone)