Figure 6
From: Evolution of a neuromuscular sexual dimorphism in the Drosophila montium species group
Ancestral reconstruction of the neuromuscular sexual dimorphism in A5 for a Bayesian tree by BBM analysis. The presence or absence of the neuromuscular sexual dimorphism in the A5 segment was determined based on the results shown in Figs. 1 and S3 and Table 1. Pie charts along nodes indicate the probability of ancestral distribution of the neuromuscular sexual dimorphism estimated by BBM analysis (left-hand side panel). It is inferred that the neuromuscular sexual dimorphism was lost at the MRCAs of several lineages indicated by shading. The ancestral distribution of pre-mounting song states (right-hand side panel) is similarly constructed based on our previous observations (summarized in Fig. S5 according to Fig. 3 in Chen et al.8) and our unpublished result. The pre-mounting song was probably lost in the two lineages indicated by shading.
