Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature currently requires accessing the site using the built-in Safari browser.
Right, so probably more important is in what refugium they survived or what refugium was first to repopulated Europe again.
No doubt about this. Success of many HGs haplogroups depended on "hitchhiking a ride" with farming societies. However the question at hand is about one time frame. Were where I2 in general, or in specific clades, during LGM.I am not sure that's the most important question since we have seen from Mesolithic samples like Loschbour and Motala that many I2, and even I2a1a and I2a1b samples belonged to subclades that are now extinct or extremely rare. There were surely dozens if not hundreds of I* and I2 subclades in postglacial Palaeolithic and Mesolithic Europe, but those that survived best to this day were those that were assimilated to Neolithic farmers, and especially to Proto-Indo-European Steppe people. Over 90% of I2 in Slavic countries today belong to the I2a1b-L147.2 (aka CTS10228, CTS2180 or Y3111) subclade, which is thought to have arisen 5,600 years ago, just before the Yamna period. These lucky few I2a1b-L147.2 became assimilated benefited from the PIE expansion, and much mater from the Slavic expansion, which saw an explosion of that lineage, especially in the Balkans and the Dinaric Alps. That's why people who just look at the modern distribution map can easily believe that I2a1b originated in and re-exapnded from the Balkans, but that is not the case.
It's easier to understand what happened in post-LGM Europe when looking at the rarer I2c. I2c1 seems to have been in central Europe, while I2c2 would have been around the Black Sea, including in Anatolia and the Caucasus. The two branches have kept very different geographic distributions ever since.
No doubt about this. Success of many HGs haplogroups depended on "hitchhiking a ride" with farming societies. However the question at hand is about one time frame. Were where I2 in general, or in specific clades, during LGM.
I never voted in this pole though. I think there were few refuge places, which helped bottlenecking, selection and founder affected lucky surviving subclades.
Exactly, they could have crisscrossed Europe many times since LGM to Neolithic, and go through many extinctions and expansions. Most likely the Younger Dryas played final and pivotal role for surviving in refugia and final expansion of lucky clades of hunter gatherers. It will be interesting to see one day a snapshot of HGs distribution at year 10,000 BC.Not sure where I1 was, but I'd say in the Balkans refugium based on the fact that it was in Hungary when Neolithic farmers arrived. However hunter-gatherers were very mobile, and over 14,000 years elapsed from the end of the LGM to the arrival of Neolithic farmers, so it may not mean anything.
This thread has been viewed 23350 times.