“Now, a team including Cristian Capelli and George Busby at Oxford University have explored the question ( in “Proceeding of the Royal Society B”).
Their results, based on a sample of more than 4,500 men from Europe and western Asia, showed no geographical trends in the diversity of R-M269. Such trends would be expected if the lineage had expanded from Anatolia with Neolithic farmers.
Furthermore, they suggest that some of the markers on the Y chromosome are less reliable than others for estimating the ages of genetic lineages. On these grounds, they argue that current analytical tools are unsuitable for dating the expansion of R-M269.
Indeed, Dr Capelli and his team say the problem extends to other studies of Y-chromosome lineages: dates based on the analysis of conventional DNA markers may have been "systematically underestimated", they write in Proceedings B.
But Dr Capelli stressed that his study could not answer the question of when the ubiquitous R-M269 expanded in Europe, although his lab is carrying out more work on the subject.
"At the moment it's not possible to claim anything about the age of this lineage," he told BBC News, "I would say that we are putting the ball back in the middle of the field."
The increasing frequency of R-M269 towards western Europe had long been seen by some researchers as an indication that Palaeolithic European genes survived in this region - alongside other clues.
A more recent origin for R-M269 than the Neolithic is still possible. But researchers point out that after the advent of agriculture, populations in Europe exploded, meaning that it would have been more difficult for incoming migrants to displace local people” (Paul Rincon).
Unfortunately the paper isn’t for free. But this is the content. On his site Maju applauds to a Balkan origin. I have written from at least 5 years that what we find in the Balkans was previously in Italy during the Younger Dryas. We shall see by more data.