On the tree reported in the paper of Shinzato et al. (2008), the previously assigned cnidarian and demosponge SoxB1s and SoxB2s all cluster outside the bilaterian Sox subgroup B1 and B2 representatives, which prompted the suggestions that the partition of group B to subgroups B1 and B2 only occurred in the bilaterians and that both SoxB1 and SoxB2 were generated from a SoxB1-like precursor [23].
This behaviour is due to the balance between stochasticity associated with the makeup of, and partitioning of, groups.
On the other hand, the partition of the group of 326 samples produces one group of 250 samples without any apparent significant CNA and a group of 76 samples whose centroid shows an amplification of the whole chromosome.
This structural grouping matches the tree topology obtained by comparison of aligned sequences, including the partition of sub-groups a and b.
Considering the evidence presented above, we can state that the partition of Sox group B to subgroups B1 and B2 makes sense, and reflects the true phylogenetic relationships, and that the SoxB1/B2 division occurred after the divergence of the metazoans and the choanoflagellate but before the demosponges diverged from the eumetazoan lineages.
pipiens complex, we examined the partitioning of wPip groups among 409 Cx. pipiens specimens assigned to one of four Cx.
To find brokerage roles in the network, the partition of nodes into groups is mandatory.
This was repeated ten times, each time with a new random partition of the three groups, in both data halves A and B (with the other as control).
The number of populations that best represents the observed data under the model implemented was determined by maximizing the estimated Ln likelihood of the data for different values of K. Third, we used the Bayesian clustering algorithm implemented in Baps 4 [71] to identify the optimal number K of partitions among groups of samples.
Taking as an example, dataset2 with 76 species, an alternative is to analyze the number of partitions containing groups of three (c3, c6, c9,..., c75).
