In South Asia, we detected eight lineage expansions dating to ~4.0–7.3 kya and involving haplogroups H1-M52, L-M11, and R1a-Z93 (Supplementary Fig. 14b,d,e). The most striking were expansions within R1a-Z93, occurring 4.0–4.5 kya. This time predates by a few centuries the collapse of the Indus Valley Civilization, associated by some with the historical migration of Indo-European speakers from the Western Steppe into the Indian subcontinent 27. There is a notable parallel with events in Europe, and future aDNA evidence may prove to be as informative as it has been in Europe.Poznik et al., Punctuated bursts in human male demography inferred from 1,244 worldwide Y-chromosome sequences, Nature Genetics, Published online 25 April 2016; doi:10.1038/ng.3559 See also... The Poltavka outlier
Monday, April 25, 2016
Signals of ancient population explosions in our Y-chromosomes
Nature Genetics has a massive new paper on human Y-chromosomes based on the latest 1000 Genomes data. I'm still getting my head around the details, but at first glance it looks like a very capable effort. This part basically reads like some of my blog entries in recent years. The emphasis is mine.