However, unlike their scheme, trees that have labels on branches or nodes other than characters or to define branching events were included, since in many cases these labels refer to classification categories that also reflect shared characteristics (e.g., amniotes).
Second, when the ladder format is used, it is critical that synapomorphies be included to define branching points and associated clades and that the meaning and importance of these characters be clearly conveyed.
In addition, the phylogenetic approach also indicates that the pathogenic status proposed for various mtDNA mutations, which actually define branches of Native American haplogroups, was based on insufficient grounds.
To clarify whether positive selection is linked to the evolution of heterophylly or homophylly, the branch-site models implemented in PAML ver. 4.1 (the modified branch-site model A) [27], [48] used heterophylly or homophylly to define branches tested for positive selection (foreground branches).
Unlike the branch-site model in codeml, this method does not require to define branches under selection a priori[ 78].
The dynamic tree cut method was applied to define branches as co-expression modules (minClusterSize = 40) [ 53].
We therefore examined the seven closest relatives of BceB, which formed a well defined branch in the MSD tree (i.e. proteins from B. subtilis, B. licheniformis, B. amyloliquefaciens, B. halodurans, B. pumilus, G. kaustophilus, B. clausii and O. iheyensis, Figure 2) with a view to characterizing their large extra-cytoplasmic loops.
For this we used a branch-sites method [ 42] and a Bayes Empirical Bayes approach [ 43] to predict sites that evolved under positive selection (those with a posterior probability > 95% of falling in a site class where d N /d S = ω >1 along a defined branch; Figure 4a).
It still uses arboreal forms, but they now mesh with other overtly defined branching systems: a vascular network of arteries and veins with two plump kidneys, mushroom colonies and their germinating mycelia, neuron bundles and taxonomic diagrams, and raw pipelines connected to steel tanks and industrial valves.
The polymerization proceeds with degenerative chain transfer and leads to well defined branched polymers with functional primary and secondary iodomethyl groups as revealed by NMR studies.
