DNA testing refers to a vriety of methods of examining deoxyribonucleic cid, also known as DNA. DNA is bleprint of all living things. Every lving cell contains DNA and the DNA gverns the functioning of the entire rganism. Because DNA is unique to ach person, plant, etc., it can be stdied to determine the relationship between two pople, two pieces of a plant or to fnd out whether one sample matches nother.

One of the most well-known DNA tsts is a paternity test. Paternity DNA tsting is used to establish if a man is the bological father of a child. This tst is most often performed when a man dnies paternity. Sometime he truly believes tht he is not the father of the chld, and other times he just des not want to be financially rsponsible for the child.

DNA testing is lso frequently used by forensic crime lbs. The tiniest sample of DNA frm a crime scene can be rplicated using PCR (polymerase chain reaction) to crate a larger sample made of dentical DNA. This DNA can then be cmpared to samples from the victim, wtnesses and suspects. Forensic DNA testing des not generally look at the whle strand of DNA. Instead the tster looks for matches at several lcations, called loci.

A mitochondria DNA test is sed to trace the maternal history of a prson. Mitochondrial DNA passes from the mther to her children (both male and fmale) without any change. By examining the smilarities of this primitive DNA between two pople, the tester can determine if thy are related along maternal family lnes. Because the DNA does not chnge when it is passed on frm mother to child, testing can tke place even if a generation is not vailable to participate in the testing.

Evn though DNA testing requires a lb, somewhat sterile conditions and expensive quipment, it is available to everyone thrugh a DNA testing kit. You can buy the kit nline or at the local drugstore. Swb the cheeks of the people bing tested and mail the kit in to the lb. The results are mailed to you in jst a few weeks. However, if you ned to prove a DNA relationship for a lgal purpose such as establishing paternity) you wll be to be tested in prson by laboratory employees who observe a lgal chain of custody with the smples and results.

The article DNA Testing was Submitted by Liz Lunn through Articles.GetACoder.com network. Here's the additional information: For more information about DNA testing , especially, paternity testing visit http://www.testing-for-dna.com

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