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Alans were a tribal group of Sarmatians. The subgroup of G2a to which the Alans belonged was actually also found in Central Asia. There are even theories that this subgroup of G2a was brought to Caucasus by Alans. Alanic burials on the Don River were by majority G2a.
Alans were diverse in some Haplogroups. G2a beeing more dominant in Caucasus and Western Alans can be explained with bottleneck effect.


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Last edited by Demhat; 01-09-2015 at 11:08 PM.


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Well actually there was presence of Alans in Central Asia. It is even said that they came from there, as we know from historic sources.
I think you slightly misunderstood. The subclade to which Alans belong is also found in Central Asia too. In the Caucasus it is not connected to one Caucasic language group, but to all the Caucasians in the West who had been historically in contact with Alans. Such as Circassians/Abkhazians and Georgians. The one group is Kartvelian the other Northwest Caucasian. So some people have the theory that a large chunck of the G2a there is brought by Alans.and the subclades of g2 in central asia are different from that in the caucasus so it can been excluded that alans brought it into to the caucasus. G2 is also predominant among non-iranic caucasians and is rather an older pre-indoeuropean marker which can not be linked to early sarmatians and scythians. The early alans had most likely r1a but they were mostly killed or assimilated by turks and only few survived who mixed with caucasians
I simply believe that the original Alans in Central Asia were R1a*, G2a, R1b*, J2a1 mixed. And a group of them moved into the Caucasus and this group coincidently was predominantly G2a (bottleneck effect).
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