Since mankind has been able to successfully track its own history, which spans tens of thousands of years, there have routinely been two other humanoid species that the modern human is said to be closely related to: the Neanderthals and the Denisovans.
Human DNA possesses bits and pieces of both Neanderthal and Denisovan DNA, but recently discovered evidence points to the possibility of a mysterious third humanoid species DNA that only the island tribespeople of Melanesia possess. And they believe that its origins are most likely rooted in the South Pacific, northeast of Australia.
A scientist named Bohlender has spent much of his career studying human DNA, as well as its historical links, for several years. He says that the current picture of human history that is seen today is most likely missing a few key pieces.
Bohlender agrees that modern day humans are closely related to the Neanderthals and Denisovans, but he also maintains that it is very possible that there was a third species that got wrapped up in the mix as well.
And that we're now seeing the emergence of this mystery DNA in small pockets of the human population.
A study that came out recently this year found certain links between Neanderthal DNA and conditions such as depression, cardiovascular disease, and many others. Additionally, it was discovered that HPV was very likely to have been transmitted back and forth between Neanderthals and Denisovans.
This study and these discoveries lead Bohlender to believe that we're missing a large part of the Neanderthal timeline, and that their history is probably very different than the history we accept as truth today.
Bohlender's theory speculates that an unknown third humanoid species would complete the missing link to the bigger picture, and would ultimately explain why Melanesian island people possess DNA that is unlike any other human DNA found in the world today.
Bohlender's theory is of course just that, a theory.
While they have found bones and teeth that could potentially be linked to a third species, no real concrete evidence suggesting this is true has been unearthed just yet. So until then, this mystery DNA will continue to be a mystery.