If you are asked to say one thing in this world that you possess and nobody else has, this is your own set of unique fingerprints. But why no two humans have the same set of fingerprints and what makes them so different for every human beings in the world?
This question can be understood in details by explaining our own skin compositions. First, we know that our skin is consisting of two layers of tissue. The first layer is called the “corium” which is the thick deep layer of the skin. The second layer is the delicate membrane of theskin which is called the “epidermis”.
For a cold-blooded animals (e.g. reptiles and amphibians), the epidermis fits smoothly on the corium, making no ridges that will result to prints. But this characteristic is different in mammals. The two layers of the skins are joined very closely wherein the corium buckles in the point where it meets the epidermis. Because of the imperfection of the corium, the tissue layer projects up into the upper layer and is molded over resulting to a firm and close attachment of both layers.
For lower mammals, the pegs that stick up are scattered at random and there is no pattern of any kind, so the fingerprint is not visible. Allow on apes, the pegs are arranged in parallel rows
But for humans, the rows of ridges do form some definite patterns. Thus, the fingerprints are visibly shown and no two humans have the same set of fingerprints.
With is unique sets of fingerprints, we are able to classify every human beings. The system of classification using fingerprints was first developed by an Englishman named Sir Edward Henry. This becomes the basis for the system that we are still using today.
The concept of this system is that all ridges of the human fingers can be divided into several patterns namely loops; central pocket loops; double loops; arches; tented arches; whorls; and accidents. And by counting the ridges between fixed starting points, it is now possible to distinguish each of the ten fingers and can now be classified into a definite fixed group. The resulting classification can now be considered as the unique set of fingerprints of a human being.
With this, there is a very slight possibility that two person will have the same ridge pattern of fingerprints. But studies show that this slight possibility is 1 in every 24 million people.