Each of us has unique characteristics that make us different from everyone else in the world. Find out what they are!
1. DNA
DNA is the main molecule in every cell in the body. It contains biological information that is passed down from one generation to the next, such as hair type, height, skin color and iris color. The DNA sequence is made up of a four-letter code with millions of combinations. Therefore, the chance of someone else having the same DNA as you is zero!
2. Fingerprint
The marks left on our fingers are our fingerprints . Their size and shape are largely determined by DNA. But the formation of our fingerprints is also influenced by factors while we are still in our mother’s womb, such as the pressure of the walls of the uterus. This is why each person is born with a pattern that never repeats itself, even in identical twins!
3. Iris
The iris, the part of the eye that gives color to the eye, is also unique. The color and general appearance of the eye is inherited from our parents, but the iris is a structure full of muscles, tendons, blood vessels, and pigmented cells. Under a microscope, you can see the variations. Several countries, such as the United States and Canada , even accept a digital photo of the iris as proof of identity.
4. Voice
Have you ever figured out who is speaking just by hearing a voice? This happens because each person has different shapes in the region that goes from the larynx to the nose. In addition, people have different behavioral characteristics, which makes the way they speak unique.
5. Dental arch
The jawbones and teeth form the dental arch. Each person has their own, with different sizes and shapes and, in some cases, restorations done by the dentist. The arch can be very useful in knowing who is who. In some cases, it is used to recognize bodies.
6. Language
Just like the tip of your fingers, your tongue has a unique design. It has impressions formed by your taste buds, with different shapes: while some tongues are smooth, others have deeper fissures. This depends on the food conditions and the pH (a scale that measures acidity) of the region.