lations as sources in a rotational qpAdm scheme such that unused 
populations are assigned to the reference set.
We expect that this simulation model violates qpAdm assumptions 
of no (or limited) gene flow after admixture between sources and ref-
erence groups. Consistent with this idea, qpAdm models are rejected 
(P = 4 × 10−38 for migration rates of 0.001 and P = 5 × 10−8 for migration 
rates of 0.005) when using Twigstats with a cut-off of 1,000 genera-
tions. However, these are not rejected using regular qpAdm, including