viernes, 20 de abril de 2018

Muestras antiguas de ADN: Haplogrupo R1b-U152



Oldest Steppe Bell Beakers: Saxony-Anhalt, Germany


We now have confirmation that there was a genetic distinction between Steppe Bell Beaker and Iberian Bell Beaker, with only the former having steppe ancestry and belonging almost entirely to haplogroup R1b-L11. A tip of the cap to posters "Alan" and "rms" for insisting on that point for many years. One of the major distinguishing factors between the two groups has always been the difference in burial rites. Steppe Bell Beaker buried their dead in single graves while Iberian Bell Beaker continued the Neolithic practice of collective burials. In September 2015 I postulated that if there was a difference between the two populations (we had none from Iberia), radiocarbon dating of single graves may lead us to some important information about the origin of L11. Since we now have radiocarbon dates of single grave Steppe Bell Beaker R1b-P312 samples, I pulled together all Bell Beaker dates from single graves that used bone/collagen samples and avoided charcoal samples affected by what called the “old wood” effect. To my delight, some new radiocarbon dates have come to light and are likely to drastically alter our view of Steppe Bell Beaker. Without a doubt, the oldest dates come from the area of Saxony-Anhalt, Germany. See the spreadsheet below: