This week we have some phylogenetic tree tattoos for the biologist rather than the graph theoreticist. Here, we have designs inspired by the works of Ernst Haeckel and Charles Darwin, plus a literal interpretation of the term "molecular tree". (Another version of this tree appears in Tattoo Monday VI.)
These are the last of the tattoos that I have for you — there are only so many exhibitionists in the world of phylogenetics. That is, as N approaches infinity the probability of N+1 approaches zero, where N is the size of the set of known phylogenetic-tree tattoos.
I have been unable to locate any phylogenetic networks imprinted on the bodies of young persons, at least among those bodies publicly displayed on the internet. Perhaps networkers prefer to put their designs on t-shirts?
If you feel the need to see more science tattoos, then you will enjoy this book: