FIg. 2.

Gene flow and ADAFs. TreeMix topologies without gene flow (a) and with one suggested gene flow event (b) are presented. Bootstrap support values are provided for each node. The suggested gene flow event (orange arrow) were further evaluated using a four-taxon test (c). ADAF for SNPs containing different alleles for the SLL reference genome and Solanum pennellii is presented in (d). Derived alleles occur with relative high frequency on all populations, due to the distance between the outgroup and studied populations. However, derived alleles occurring in SLL are most common in SLC MEX, suggesting a close relationship.