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DNA Profile Basics

The Genetic Fingerprint

Every person can be differentiated from all other human beings by their inherited genetic information. This information is found in the Deoxyribonucleic Acid, DNA for short, and it is saved in your genetic profile. The DNA material is packed in Chromosomes and identical copies of this material is found in almost every part of the body.

It is possible to use almost any body material to find out the characteristic DNA profile of a person. Usually we use body cells that are painless to collect, like cells from the inside of your mouth, cells from blood, or hair cells, etc.

With a “genetic fingerprint” or DNA-Profile, it becomes possible to differentiate one person from practically all other human beings, just like the classic fingerprint from your fingertips. This way is more than sufficient for a genetic fingerprint to show a strong difference between each individual person while observing only a small number (8-25) of the chosen areas of a DNA structure. These chosen areas of DNA (also known as STRs) are specifically chosen because they come from part of our genes which are not responsible for certain qualities in a person's genes that can betray the result. In actual fact, the information responsible for our genetic qualities comes from an extremely small area of DNA (less than 1%).

Therefore the genetic fingerprint exclusively serves the purpose as a means of identifying a person, just like the traditional fingerprint. The genetic fingerprint does not even determine the sequence (the order of the DNA structure) of the STRs, but merely the length of the pattern. Due to the number and type of the STRs being examined, the length patterns become so individual that an almost complete level of accuracy in human identification is achieved. This is a level of accuracy that is at least equal to a traditional fingerprint, and more often the genetic fingerprint is superior.

 

The Personal DNA-Profile

 

For a personal DNA profile we match the lengths of 16 STRs. Through this process we find the 13 so-called “CODIS core STR loci” and three others. The “CODIS core STR loci” are all about a set of international used and recognized STR-Systems. These STRs are chosen and used by the FBI for identifying people and today these standards are used worldwide. Although one hopes it will never be needed, the chances of identifying someone are greatly improved when a DNA profile is available. We can have your own DNA profile made available should the situation arise that someone needs it, or simply because you'd like to have it.

 

 

 

How Does One Acquire the Material Needed for a DNA Test?

From each test person (child, parent) we require a small cell sample. Because it is so simple and absolute pain free (rubbing the roof of the mouth or inner cheek with a q-tip) we have produced a Test Set that we send to you free of charge. The Test Set also includes a detailed description of what to do, including instructional pictures. You can also watch a video of how to take a test sample right here on our website. The process of collecting cells for the test sample is worry free, quick, simple and easy to do. That's why we do not recommend that you send us blood samples, chewing gum, toothbrushes, pacifiers, pulled out hair, etc., although we could also use these things to remove the necessary DNA material. Please feel free to contact us beforehand should you require DNA analysis from these or any other alternative methods.

 

 

© 2014 Galantos Genetics GmbH