Used in high-profile criminal investigations and paternity cases, deoxyribonucleic acid, commonly known as DNA, testing has now been popularized to prove relationships between individuals. The evolution of the test in past years has turned DNA testing into a popular tool for determining ancestry. The test also helps in determining if two people are related or descend from the same ancestor. Although DNA has been around for many years now, the cost has dropped enough to be affordable to average individuals interested in tracing their roots.

Home DNA test kits can now be ordered over the Internet or through the mail at a cost of less than $ 300 per test. The kit usually contains a swab or mouthwash that can help collect a sample of cells from the inside the mouth. The samples can be posted back via mail and within a span of one month an individual can receive a series of numbers that represent key chemical ""markers"" within his DNA. These numbers can then be compared to results from other individuals to help determine ancestry.

An individuals DNA test provides only a little information about the ancestry. It becomes complex to understand the numbers and put them in formulas to find details about the family tree. It is always advisable to adopt these studies within a group of family members. The only option provided to an individual is to input his DNA test results into the many DNA databases on the Net for finding a match with someone who has already been tested. Most of the DNA testing companies also provide information by matching the DNA results undertaken by other individuals. This information is provided by companies only on request and with the consent of both parties. And both persons should submit written permission to get the results released.