I ran statistical best-fit analysis on archaeological autosomal data, which yielded the following results:

  1. R1b Bell Beaker and R1a Corded Ware each fit best with a core in the same samples from 5th millennium BC Bulgaria.
  2. These Bulgarian samples in turn each fit best with a 50:50 admixture between 5th millennium BC Khvalynsk (skewed South West) and Neolithic Anatolian.

These results would accordingly support a number of perhaps unorthodox hypotheses, e.g.

  1. R1b pre-Bell Beaker and R1a pre-Corded Ware emerged from within the same community.
  2. Their most recent common root was Bulgaria, rather than the Steppe.
  3. Their root population's almost exact 50:50 best-fit combinations suggest they were the products of first generation admixture, helping us to date the most significant migration of DNA from the Steppe to the dates of the samples (4,500 BC) - somewhat earlier than otherwise thought, but not significantly earlier than this.
  4. Their Steppe DNA derived predominantly from a Khvalynsk-like population, rather than the Yamnayan population that succeeded it.