DNA: Our Molecular Fingerprinting

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We are basically the combination ''written" in our DNA molecule. 

Our DNA have billions of thousands combinations, and this combinations determine which characteristics will be expressed. Because this we are different even between us, despite we share 99% of our genetic code. This little difference, less than 1% is the reason of all of our variation, like size, eye color, weight, etc. 

What is very interesting is the fact of the scientist Alec Jeffreys, in 1984 at the University of Leicester, discovered that this little variation works like a fingerprinting. This occur because the variation, like a fingerprinting, is unique. In other words, means that the variation of you that is reading this text is different of mine. 

The theory of DNA Fingerprinting is amazing because allow us, for example, to track a person that committed a crime. 

It starts a new area of science, immediately lead to many applications, like crimes, paternity tests and DNA conservation. 

The paternity tests became common currently, and the DNA conservation proved be something very useful to maintain the DNA of stinciton species. Nevertheless, this technique used to caught criminals is considered for many people like a great modern problem, because they think this is a clear violation of Civil Liberties, once they store the profiles of millions citizens in databases.  

Before this situation we have to ask us if is right to use this technique in favor of what they called “Justice”. Obviously is an amazing way to caught criminals, but I guess that can be used with caution to respect the people.