But how is it possible for ethiosemegic speakers to have the same proportion of haplogroups as somalis ? Shifting lanaguges from cushitic to ethiosemetic doesnt just happen. It Requires massive replacement of the male pouplation. Which shows up in the haplogroups. Like if you look at India for example they only have a very small amount of Indo-European ancestry. But they mainly speak Indo-European Lanaguge. If you look at their haplogroup it's 30-40% mainly Indo-European ones.
Firstly, walaal, data is data. The fact that we have this admixture appears a simple statistical fact. There's not really arguing with data. We can theorize into infinity around how we got the ancestry but I'm not arguing with you about data unless you have an actual case for how these results are somehow fake?
That aside, I'm not following your train of thought. Somalis are like 60-70% one single Haplogroup; subclades of E-Z813 and then Northwestern Somalis are almost completely dominated by T-L208 (particularly the Dir) with the other tribes showing some minor frequencies of it so like 20-30% overall that one Haplogroup and its subclades.
These are clear founder-effects that would have wiped out or minoritized much of the other lineages our ancestors would have definitely had even before PES admixture entered the Horn like A-M13, E-M329, E-V6 and E-V22. How is it hard to accept that these founder effects also prevented J1 from finding any significance beyond 1-5% among Somalis. In fact, it's remarkable how its frequency among Somalis mirrors the frequency of A-M13 which is another lineage all other Horners have in much more significant percentages and the fact that these two survive the most as minority lineages whereas the other lineages like the M35 clades only appear extremely rarely pretty much tells you they were once much more numerous before being usurped.
Plus, it's not even that different from the frequencies of Highland Ethiopians when you do the math:
- Highland Ethiopians are 15-25% J1 (I'm counting Sidamics)
- Highland Ethiopians are 20-25% Iron-Age Yemeni
Cut both of those even just in half and you get?
- 7-13% J1
- 10-15% Iron-Age Yemeni
That's not remotely far off from Somalis and the small discrepancy in Y-DNA is easily explained by the over-dominance of T-L208 and E-Z813.