DNA Testing: The Process

By Clark Huffine

DNA is the set of encrypted numbers that reflect the genetic makeup of a person. This can be used to identify and verify that person accurately. Also known in this field by other terms, such as DNA profiling, DNA typing, or genetic fingerprinting, DNA testing, accordingly, is the scientific process and technique employed to competently identify individuals through their respective DNA features.

In this technique, it uses repeat sequences which scientists describe as highly variable. These are what are known technically in this field as the variable number tandem repeats. Variable number tandem repeats loci are very similar between closely related humans, but so highly variable that unrelated individuals are extremely unlikely to have the same genetic makeup. First reported in'85 at England's University of Leicester, this technique is now widely used in many countries across the globe.

The DNA testing process aptly begins by taking a sample of the DNA sample of a person. In doing so, the testers will collect samples of the person's blood, saliva or semen. It may also be based on fluid or tissue from personal stuffs like the toothbrush. Or, it may also get samples from storage like sperm or biopsy tissue. But the most common among these procedures in collecting a sample of the person's DNA is the use of the swab test.

Likewise samples obtained from relatives by blood can provide an indication of an individual's profile. Also, human remains which had been previously profiled can also be obtained a sample DNA for testing purposes. The DNA profile is then compared against another sample to determine whether there is a genetic match.

Ultimately, there is good ground and valid claim to assert that these tests based on genetic sources can possibly and strongly establish evidence of genetic relationship. However, it is likewise noteworthy it is in this jurisdiction that based on legal precedents and on grounds of public policy, DNA testing disproving relationship cannot provide absolute certainty. - 32385

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