posted
Check this one out. It gave me a headache to be honest. They associate Basal Eurasian with African populations and then give it a mythic Arabian origin:
"Arabian Peninsula is strategic for investigations centred on the structuring of the modern human population in the three main groups, in the awake of the out-of-Africa migration. Despite the poor climatic conditions for recovery of ancient DNA human evidence in Arabia, the availability of genomic data from neighbouring ancient specimens and of informative statistical tools allow better modelling the ancestry of these populations. We applied this approach to a dataset of 741,000 variants screened in 291 Arabians and 78 Iranians, and obtained insightful evidence. The west-east axis was a strong forcer of population structure in the Peninsula, and, more importantly, there were clear continuums throughout time linking west Arabia with Levant, and east Arabia with Iran and Caucasus. East Arabians also displayed the highest levels of the basal Eurasian lineage of all tested modern-day populations, a signal that was maintained even after correcting for possible bias due to recent sub-Saharan African input in their genomes. Not surprisingly, east Arabians were also the ones with higher similarity with Iberomaurusians, who were so far the best proxy for the basal Eurasians amongst the known ancient specimens. The basal Eurasian lineage is the signature of ancient non-Africans that diverged from the common European-East Asian pool before 50 thousand years ago, and before the later interbred with Neanderthals. Our results are strong evidence to include the exposed basin of the Arabo-Persian Gulf as possible home of basal Eurasians, to be investigated further on namely by searching ancient Arabian human specimens."
posted
"Thus, the exposed basin of the Arabo-Persian Gulf is a possible homeland of basal Eurasians, with an easy corridor linking the current Hormuz Strait to the Zagros and Caucasus steppes (the east continuum). Recent archaeological evidence (Heydari-Guran and Ghasidian 2020) is being collected in the Zagros region, proving that this region was passable in the Middle and Upper Palaeolithic, and included intermountain plains connected to each other by valleys associated with permanent water and raw material sources. If the basal Eurasians were located in the Arabo-Persian Gulf, another nonAfrican group would be mingling at a northern location, around Levant, with the autochthonous Neanderthals, and were the ancestors of the current European and Asians pools. The basal Eurasians and the Neanderthal admixed group were genetically close, so they most likely descended from the same African migrant group that did split somewhere. Did the split occur in southwest Asia after the OOA migration (through either the northern or the southern route (Lahr and Foley 1994))? Or, alternatively, are our data suggesting that the group split earlier in Africa?"
You think?
Posts: 288 | From: Asia | Registered: Mar 2016
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posted
The ancient Iberomaurusian sample included in the analysis was the one with the highest input of the basal Eurasian lineage, even higher than the ones observed in modern east AP populations. Not surprisingly, cluster A bearing still a mean 20% sub-Saharan African admixture, was in a close position to the Iberomaurusian sample, with clusters D (east AP-Iran) and F (west AP) occupying a position similar to the other Levant and Iranian samples.
Posts: 288 | From: Asia | Registered: Mar 2016
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