I do know all about G2a and farming.
What you aren't considering though is basic lifestyle patterns and burial practices. If G2a lived and farmed on interior lands it would only make sense that they would be found at higher numbers there.
I think we need to ask a archaeologist or a expert on this ur ideas make sense but i don't think it is that simple. and almost all Europeans about 6,000-7,000ybp where farmers the hunter gathers where inferior because they had less technology. You could not stop the spread of farming the hunter gathers had to either die or become farmers that is why no native american tribes really survived and where able to keep their traditional lifestyle. I think u need to remember the hg I people did not think of themselves as one group they had no idea they all had Y DNA I the hg I2a1b people in eastern Europe had a very different culture than the hg I2a1a people in western Europe. hg I2a1b still stayed as teh main Y DNA haplogroup in eastern Europe and it still is today in alot of eastern Europe even after R1a1a and R1b Indo European invasion. I made a thread that shows probably what the Y DNA of people in europe 6,000-8,000ybp probably was all i did was take out all Indo European and mid eastern y DNA that came in Greco Roman age here is a link
http://www.eupedia.com/forum/thread...-pre-Indo-European-Europe?p=411136#post411136. The I2a1a, I2a2, I1a1, I1a3, I1a4, and I1b people in western and central Europe did not survive so well they avenutlley did become farmers but where mostly killed off by the G2a farmers so G2a became the main Y DNA haplogroup and Mediterranean became the main austomnal DNA group but like i said we have found 4 Y DNA I2a1a samples in France from 5,000 and 4,700ybp so it was there, I dont think u can say the reason we have mainly G2a from Neolithic Europe is because the farmers preserved better it is because teh scientists intentionalley went to burail sites because they knew those people where farmers and by 7,000ybp almost all Europeans where farmers. But in a little bit we will get y DNA from Mesolithic hunter gathers from over 7,000ybp there are already some projects like the rise who say that there will be tons and tons of new ancient DNA in the next few years
Now if more mobile hg. I hunter-gatherer members centered their existence around boats (like we see with both the hg. I heavy Vikings and early Anglo-Saxons) then it would be more difficult to find their remains. Sea-level change and river erosion are real factors to consider here.
Also the hg. R members are famous for introducing their more elaborate burial practices (ie. Kurgan)... but the native hg. I members-- not so much. And of course burial practices will have an impact on body preservation.[/QUOTE]
**EDIT**
And the initial hg. I and hg R differences would have indeed been "racial". Too much geography over too much time separated these groups and external variations would have been glaring. It's fun to imagine what each group would have looked like, but I don't think we will ever truly know.
we know otzie a farmer in alps Italy who had Y DNA G2a4 and died 5,300ybp had white skin , brown eyes, and brown hair. German scientists who say they have alot of new mtDNA, Y DNA, and austomnal DNA from some of the earliest Indo European Kurgen people in Russia from 6,000 and 5,000ybp say they had white skin and by far mainly brown eyes. Just like non Slavic people in that area today which could mean they directly descend from some early indo European ethnic groups. We also have DNA that can tell skin color, hair color, and eye color from early Kurgen Indo European Indo Iranians in south Siberia from 3,800ybp they had Y DNA R1a1a1a most had light eyes and light hair. Overall Indo Iranian pigmentation genes from 4,000-2,000ybp 60% had light hair and 70% had light eyes some had red hair to so i guess that puts the light hair percentage up a little bit. These light hair color percentages only found in modern Scandinavians, Baltic, and far northwest Russians. Also the German scientists said Sythien Indo Iranians in tagar Russia who where buried in kurgens 2,800-2,000ybp where very unrelated to the kurgen Indo Europeans around the same area of Russia from 6,000 and 5,000ybp. Since the Indo Iranians descended from the same Indo European cultures 6,000ybp but they had light eyes not brown eyes and where unrelated to the Brown eyed people this means that the early Indo Europeans 6,000-5,000ybp where a mix of different European ethnic groups who descended form hunter gathers who lived around Ukraine and Russia over 8,000ybp.
Even though orignalley Europeans in austomnal DNA would only have a group most tests call north European and austomnal DNA we have so far from European hunter gathers they where dominated by north European a percentage only found in mdoern Finnish and Sami. the Farmers though had 20% or less north European they where dominated by Mediterranean at such a high amount only found in modern Sardine's and Iberian so i guess this means those farmers where less than 20% European but they still had white skin and so did the Indo Europeans so the hg G2a farmers in western Europe who where conquered by hg R1b 5,000ybp indo Europeans both would have looked European they where not different races. since it seems the hg R1b L11 Indo Europeans that conquered western Europe 5,000-4,000ybp spread red hair that probably means they also had more light hair than the farmers they conquered but the farmers in central Europe and France probably had just as much light hair and eyes the only racial difference that would have been obvious is red hair the original R1b L11 proto Germanic Italo Celtic speakers probably had 20% red hair so if someone had red hair that was a dead give away they where from a Indo European tribe but besides that there was very little racial difference only the farmers in Spain and Italy would be easier to identify because they would have almost only dark hair and eyes. and it seems hat orignalley all of eastern Europe including Greece about 8,000-6,000ybp had about 40-50% ight hair and eys it is hard to say what Indo European ethnic group was the proto Balto Slavic speakers and proto Greek speakers if it was the dark eyed people i guess they could see a little racial difference. But u have to look at it this way can Germans recognize a Yugoslavian by how they look maybe he can but it is hard the G2a farmers and different Indo European groups maybe had little differences but they where little the way they identified each other was probably culture
