GENETICS New result in Ethiopia changes the origins of Somalis how have haplogroup T

[haile_selassie]

Ok well while it’s interesting this clade is in an Ethiopian it is still on the majority line of Somalis under T-Y16897 . Most likely repressing very ancient migrations back to Arabia from Horn of Africa being ancestral to some no Arabs/Horn-descended Arabs

 

[Thegoodshepherd]

@Midas @Shimbiris @NidarNidar

Yoy may find these explantions interesting for how a small patrilineal lineage could slowly grow into 10%-15% of the Somali population.

Source: Gaelic and Gaelicised Ireland in the Middle Ages

Assume that all lineages are sharing a mating pool. If one lineage has a reproductive advantage of just 14% per generation (e.g advantaged lineage has a TFR of 2.28 each generation while all other lineages have a TFR of 2), then 3% of all the lineages sharing a mating pool will go extinct each generation. Differentials in reproductive success REALLY snowball when you are living in a steady state Malthusian society. Remember all human societies were Malthusian and spent something like 90% of their history at the steady state (Malthusian equilibrium) where population is static.

Add in the fact that bride price and polygyny were universal among Cushitic peoples, and it is all but guaranteed that some lineages would gain an advantage and their share of the population would grow, even in the absence of any violence.

This is a brilliantly researched article, they cite I.M Lewis’ seminal paper Force and Fission in Northern Somali Lineage Structure.

Source: Patrilineal segmentary systems provide a peaceful explanation for the post-Neolithic Y-chromosome bottleneck

 

[MacrobianTeera]

New result on the branchT-BY181195 Which goes back to 3400BCE
For a Ethiopian This means that the Saudi results are just a reverse migration
One Saudi has 28% Ethiopian origins
The other one has the name Al-Zayla'i Which means that his origins are from Zeila
View attachment 370563View attachment 370561

This isn’t definitive evidence for anything.

 

[MacrobianTeera]

A small group who may very well have brought huge cultural change to the region such as camel pastoralism, asiatic admixture in our bovines and caprines and maybe even iron metallurgy. Leaving behind just a Y-DNA—if indeed those innovations were all brought by one group which I admit is just a guess based on timing—is frankly lightweight in terms of influence. They otherwise left nothing behind other than maybe OSA loanwords:

2013 Strata in Semitic loanwords in Northern Somali

2013 Strata in Semitic loanwords in Northern Somali

www.academia.edu

And the thing is, Somalis are a patrilineal tribal society like Peninsular Arabs, Pashtuns and the early Indo-Europeans. It's not hard for one lineage among several to just become overrepresented due to a founder-effect cos of one prominent chieftain or tol having a bit of political dominance for a time or whatever other reasoning one can cook up.

Arabians' actual ancestors definitely had a shit-ton of E-M35, T, J2 and many other lineages but that pastoralist patrilineal system did its work and over-repped J1 in various areas. I wouldn't take T's dominance in a good chunk of the northwest as a sign that there were actually A LOT of Arabians who spread it once upon a time.

It wasn’t one single back to africa migration, they already know it was more saxib