Tracing Geographic Origins with Ancestry DNA Tests

There are several reasons why anyone would want to take a DNA test. Some people are interested in knowing their origin and genetic background. With the development of genetic science, one can get answers to various questions about his or her ancestry. Nowadays, DNA testing is not only popular, but also affordable. Read more about Cultural Travel Experts at this link for more information.

Ancestry DNA testing has advanced to a point where you can submit a sample to a lab to have your DNA tested. The lab will analyze your DNA and give results containing the details of your paternal line as well as your maternal line. For the DNA lab to determine one's maternal line, the experts look at cells referred to as mitochondrial DNA. The paternal line, on the other hand, is determined by examining Y chromosome markers. There are unique parts of DNA that changed after your ancestors moved out of Africa which is considered the origin of all humankind.

A DNA test may show that you have a marker called Haplogroup R1b. This marker is common for western Europeans though it doesn't necessarily mean your ancestors are from Europe. This is because some men from North Africa also have this marker. A marker is not the only element that determines your origin. It may point towards Iran or Japan but you may not be from there. Many providers of ancestry DNA testing may never tell you about these important details. So, you should make an effort to get the finest details of your ancestry to ensure the results are accurate.

The latest developments in genetic science may improve the accuracy of these tests. The mitochondrial DNA and Y chromosome use short DNA sequence, hence they only test a single strand of one's DNA. It would be much better if DNA laboratories would analyze the whole human genome. However, this would also be complicated. Stretches of chromosomes are reorganized in each and every successive generation. This makes it hard to match them up. The type of DNA tests carried out these days enable researchers to map the ancestry of a particular population. Researchers examine letter changes in the genomes of given populations.

Everyone needs to be aware that there's a limit to what an ancestry DNA test can determine. For example, scientists may soon be able to provide an estimate of when various populations interbred. But the scientists will have to make some assumptions when doing these calculations. This kind of information should be passed on to the client.