Haplogroup I M26 is found only is the western mediterannean sea, Iberia, parts of western France and the British island. It can't be Serbian or even Lydian.
I was not clear I guess...
I do not say it is Serbian, but that it is related in sense that I2a1 typical for Sardinians, and I2a2 typical for Serbs both come from same I2a branch... the split have happened long time ago, but root of tribal name seems to be the same...
Then, there is only between 5% and 15% of I2a in Lydia. So between 85% and 95% of the Lydians do not carry I2A. Mny of them wuld have been J2 and there is almost no J2 in Sardinia.
pay attention that we talk about periods few thousand years in past and that frequencies of haplogroups change when people move and others settle... with known history of frequent wars on this planet, it is very naive to assume that current spread equals one from e.g. 3200 years ago (which was roughly the time of sea peoples)...
5% to 15% of I2a2 now in Lydia might have been much more 3200 years ago...
I M26 is clearly a marker of the atlantic bronze age. To me it is the nuraghic culture of Sardinia.
I agree that I2a1 might have been one of the key markers of atlantic bronze age...
but how can you be so sure, and why would that exclude it from being marker of Sherden?
For the Sherden, a Serbian origin doesn't explain G2A presence.
why do you assume that Sherden were G2a people? If they were from Sardinia and if I2a1 is marker of Atlantic bronze age that would imply that they were I2a1, while G2a would be later arrival (e.g. Alans, but also perhaps Etruscans pushed from continental Italy)
Then I don't see why the SEA people would have originated from a NON COASTAL land like Serbia.
I was talking about I2a2 as mark of proto-Serbs, not neceserilly about people from Serbia.... reason I allowed myself to talk that way is that Seneca talks about people named Serians who live:
1) in arc from India to China,
2) in northwest China producing silk
3) in Caspian mountains (which is location of tribe Serboi)
4) in Europe where they rule over scattered Scythians (R1a)
5) on shores of Red sea
now, if I use genetics to search for Serians, I would be able to recognize hotspot in northwest China and arc from China to India, and presence in Europe, and presence in Caspian highlands....now that is what only haplogroup I provides me with...
haplogroup I in Asia matches location of Serboi/Siraces, it makes an arc from China to India (today big part of this arc are Pashtun Sarbans), is there in northwest China...
Sea people were clearly technology advantaged (bronze weapon, ship...). So the Sherden would have come from a technologically advanced area (not in Western Europe), with access to sea and from a G2A Hotspot.
why from G2a spot? you do realize that there can be many waves of people of different origin who settle any location...
second, link between Sardinia and Sherden is never proven...that theory is completely based on two things: similarity of names (same you have with Serbs as Serbonian bog is named after Sherden) and by idea that Sherden are sea peoples and that thus should be searched along coast ... it is good theory...but sea peoples were also massive land invasion, not only sea invasion... which makes me hard to be convinced that they came from Sardinia...they might have had related colony there though...
I finally think that they do not come from Lydia but rather a land east of the Black sea, in present day Georgia.
If you make it shores of Caspian sea, you have there Serboi tribe and lot of I2a2...or Serians in Seneca's work, or what I call proto-Serbs
if you keep assumption that they came from Black sea area you still have there Siraces, which are considered to be same as Serboi
both Serboi and Siraces locations do match elevated I2a2 areas...