Y-DNA R1a spread from Iran

[Vlatko Vukovic]

While this conclusion was something more or less reachable with previous data (see HERE for example), a new study adds some fine detail for us to reconstruct the paleohistory of this major Eurasian lineage.

Peter A. Underhill et al., The phylogenetic and geographic structure of Y-chromosome haplogroup R1a. EJHG 2014.

"R1a-M420 is one of the most widely spread Y-chromosome haplogroups; however, its substructure within Europe and Asia has remained poorly characterized. Using a panel of 16 244 male subjects from 126 populations sampled across Eurasia, we identified 2923 R1a-M420 Y-chromosomes and analyzed them to a highly granular phylogeographic resolution. Whole Y-chromosome sequence analysis of eight R1a and five R1b individuals suggests a divergence time of ~25 000 (95% CI: 21 300–29 000) years ago and a coalescence time within R1a-M417 of ~5800 (95% CI: 4800–6800) years. The spatial frequency distributions of R1a sub-haplogroups conclusively indicate two major groups, one found primarily in Europe and the other confined to Central and South Asia. Beyond the major European versus Asian dichotomy, we describe several younger sub-haplogroups. Based on spatial distributions and diversity patterns within the R1a-M420 clade, particularly rare basal branches detected primarily within Iran and eastern Turkey, we conclude that the initial episodes of haplogroup R1a diversification likely occurred in the vicinity of present-day Iran."

This case, as well as many others, including that of its close relatives R1b and Q, illustrate why frequency is not the same as origin, which can only be inferred (if at all) by studying the hierarchical diversity of the lineage. These three lineages for example, must have spread from West Asia but they are relatively less important in numbers in that region today, overshadowed by other lineages, notably J. Instead their derived branches had major impacts in other regions (Europe, South and Central Asia, Siberia and America).

[Ülev]

man, I always liked R1a, always!

[Vlatko Vukovic]

man, I always liked R1a, always!

R1ethel is your hero now, i guess

[Ülev]

R1ethel is your hero now, i guess

nah, I just like warmer climate conditions, and don't like all those Yamnaya and Hypeboreia theories

[Proto-Shaman]

Kivisild et al. 2017, The study of human Y chromosome variation through ancient DNA

"Extremely rare extant sub-clades of R1a, such as R1a4-YP5061, R1a5-YP1272, and R1a6-YP4141 (Fig. 7), may bear witness to a long-term continuity of such old genetic lineages while the majority of present-day R1a and R1b lineages in West Eurasia derives from just a handful of Late Neolithic/Early Bronze Age male founders."

[Viking]

every shits came from Parsia

[Vlatko Vukovic]

Kivisild et al. 2017, The study of human Y chromosome variation through ancient DNA

R1a-M417 bassinet of scythian tribes (including Sarmatians) lol

[Ülev]

[Vlatko Vukovic]

every shits came from Parsia

There is adage: "Iran is bassinet of civilisation". It have sense ofc

btw. Persians are just 1 of a lot tribes who origin from there

[Vlatko Vukovic]