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\section{Conclusion and discussion}  Two important aspects emerged from the presentation in my opinion.  The first is that the question is still open and there is still work to do to achieve a complete and relevant method for representing and analyzing phylogeny. For this purpose, combinatorial networks have a great potential and have already started to build the foundations of next-generation phylogenomics.   On the other hand, the presentation has indirectly shown how recent advancements in sequence analysis and NGS altered the way we look at evolution, henceforth the reconstruction of the evolution. The more we discover about the molecular biology of DNA and recombination events, the more constraints and variability arises when it comes to formalize them into mathematically exploitable objects.