How Does DNA Testing Work?

DNA Tests are quite important when it comes to determining our historical background in a scientific perspective. Not only just that but with our DNA present as a sample, we have all the traces to our genes reflecting everything from the colors of our eyes, hair, skin to our ancestry, diseases, and just about everything.

While so much can be revealed by the DNA results, questions do come to mind as for how does the DNA testing work? It can be easily explained in a few steps:

  1. Collection of DNA: To have a sample of the DNA, it can be collected from any part of the body. It means that the DNA could be obtained from a strand of your hair follicle, saliva, skin, blood or any fluid related to the body.
  2. PCR: Once the sample is obtained, the sample is treated in such a way that the DNA associated with the cells of the sample is separated and is then duplicated using Polymerase Chain Reaction (PCR). PCR helps duplicating the pattern of the DNA and with so many samples obtained it is easy to analyze the obtained sample of the DNA.
  3. The Split: The DNA is split from certain locations. Once split, the chunks from the certain points are analyzed to form a DNA fingerprint. It is then compared with another similar sample to produce the results.