According to Steve Jones, a professor of human genetics at University College London, if you go back far enough, nearly every individual of British descent can trace their roots to African migrants. However, legendary Welsh singer Tom Jones believes his African ancestry may have been introduced slightly more recently into his family tree, so he's having his DNA tested to prove once and for all whether or not he is black.

When Jones first came to America as part of the British Invasion in the early 1960s, many mistook the native Welsh singer for a black man due to his tanned skin, deep voice, and thick, curly locks.

“A lot of black people still tell me I'm just passing as white,” Jones told The Telegraph, referring to the practice of fair-skinned black individuals assuming a white identity in an effort to avoid racial prejudices.

Although Jones identifies as white, and, according to his family’s birth records, is of English and Welsh ancestry, because of his dark features, the “Delilah” singer still questions if there is more to his family tree than what is written in the birth records.

“My mother came out in big dark patches all over her body,” Jones said. “They asked if she had any black blood and she said she didn't know.” Now, at 75 years old, the music legend plans on undergoing private DNA testing to find out if there is any truth to these rumors.

Our DNA is the outline of who we are and each individual gets one half of their double helix from each parent. Over time, different ethnic populations have developed similar genetic make-ups. Genealogists look for genetic markers in DNA to find similarities and differences between different groups of people, and use these markers to identify an individual’s ancestral lineage.

It takes only a few short weeks for companies, such as, to use DNA taken from a saliva sample to identify what region(s) in the world an individual's ancestors come from. DNA testing has come a long way, with mail order tests claiming to not only be able to tell specific percentages of ethnic origins, but even identifying whether or not individuals are related to famous historical figures, such as Napoleon or Cleopatra, The Daily Mail reported.

Despite the excitement surrounding mail-in DNA testing, many scientists urge the public to take their results with a pinch of salt. While our DNA does contain a large amount of genetic information on our ancestry, due to high degrees of genetic mixing over human history, it is difficult to interpret these results without more historical evidence.

“You cannot look at DNA and read it like a book or a map of a journey,” Professors David Balding and Mark Thomas of UCL said in a 2013 public statement.