Fig. 3
A Two qpGraph models without outlier D and f4 statistics showing two admixture events. Numbers next to the arrows correspond to the relative amount of drift on that branch. Percentages next to the dotted lines correspond to the best model fit for the admixture fraction of each population. B Dfoil results, showing access allele sharing between the different gorilla populations. Both eastern gorilla subspecies (mountain and Grauer’s gorillas) show a signal of recent admixture with western gorillas, with the strongest signal observed between the eastern and Cross-river gorillas (top bar). Additional bi-drectional gene-flow is observed between the Grauer’s and Cross river gorillas (3rd and 4th bar from the top)