New research has found even moreevidencein support of the amazingly complex relationship between our ancient ancestors and those of other archaic human   species over the past hundreds of M of years . Using young analytic technique to estimate the per centum of ancient hominin DNA now determine in live masses , Dr Ryan Bohlender has found evidence for multiple interbreeding event within and outside of Africa . His   findings were presented at the   American Society of Human Genetics   in Vancouver , B.C.

This latest enquiry game up earlier study that also found that the relationship between these ancient species is a destiny more muddled than many thought . While ab initio there may have been a sportsmanlike and simple split as the branches of our evolutionary tree divided , over   time there were a multitude of crossover voter as our ancestors mated with at least two , but probably many more distinct human coinage that emerged over the last 500,000 age or so .

It isnow common knowledgethat modern humans once had sex act with our Neanderthal first cousin , resulting in the fact that everyone outside of Africa has a little snatch ofNeanderthalstill residing in their DNA . But this revelation only occurred within the last decade , as DNA analysis techniques became more quotidian and advanced . This tardy cogitation has added more to the write up of our interactions , find that contrary to what earlier inquiry regain , it seems that the level of mixing with Neanderthals is not importantly unlike between Europeans and East Asians .

But that was n’t the only ill-tempered - species sexual urge our ascendant got up to . know only from a few fragment of bones , the enigmatical Denisovansevolved from the same branch that establish rise to the Neanderthals , and are thought to lend to between 3   and 5   pct of the genomes of   aboriginal Australians . That is literally all we know about the Denisovans .

But even more enigmatically , it seems thatthere is genetic evidencefor another species that may have survive in Southeast Asia around the same time as the Denisovans and us .

While no physical fogey have ever been found , genetic analysis of Pacific Islanders seems to show that a trenchant species of ancient human being , thought to be another sis group to the Neanderthals and Denisovans , may have been breeding with our ancestors as they moved into Southeast Asia . Who these may have been , nobody knows . Some indicate that the environment in this part of the world means that fossils are unlikely to last , while others argue that as we know so little about the genetic variety of the Denisovans , this mysterious deoxyribonucleic acid could still be from them .

Yet this is not the first time that researchers have describe what they think is evidence for an ancient metal money of man hide out in our genes . Analysis of people ’s genetic science in Africa show that   something similar may have occurred there too , with suggestion of another fussy - species romance . But there is still a hole in African genetic science .

“ Africans have been underrepresented in genetics enquiry – they ’re not as well studied as European and Asiatic population , yet they are more diverse genetically than any other chemical group , ” Dr Bohlendersaid .

With the productive evolutionary history of hominins within Africa , this will likely yield even more interbreeding event , and   it is highly likely there are   other yet to be revealed   example from other percentage of the planet . As ever , things are never quite as aboveboard as they first seem .