Figure 3

Phylogenetic trees from separate analyses of spidroin N- and C-terminal domain sequences. A. N-terminal domain, consensus of 4 most parsimonious trees (MPTs), B. Bayesian consensus tree for N-terminus, C. C-terminal domain, consensus of 8 MPTs, D. Bayesian consensus for C-terminus; A, C: numbers above nodes are bootstrap (BT) values, below nodes decay index, thickened branch supported by ≥ 70 BT in parsimony nucleotide analyses (Additional file 4a, 4c); B, D: numbers above nodes are posterior probability (PP) values, thickened branch supported by ≥ 0.95 PP in Bayesian nucleotide analyses (Additional file 4b, 4d).