In the process of finishing up a paper, I came across this figure (Gilbert 2007).
Two questions. One, why are these points joined by lines? Two, what does “taxonomically ordered” mean? I suspect it is equivalent to “phylogenetic sequence”, which was discussed in a previous edition of “What’s wrong with this figure?“.
Here is the phylogeny that is most often seen in discussions of the 12 Drosophila genome sequences (in this instance, based on Crosby et al. 2007).