Figure 8.

Expression levels for nontoxins were conserved between Crotalus adamanteus and C. horridus despite major differences in toxin-expression patterns. In all plots, the diagonal line indicates equal expression levels across species. (A) The comparison between species on the basis of orthologs identified by means of a reciprocal-blast search. (B) The comparison between species on the basis of aligning 10 million reads from each species against the nontoxin sequences from C. adamanteus. (C) The comparison between species on the basis of aligning 10 million reads from each species against the nontoxin sequences from C. horridus. Note that for (B) and (C), the distortion in the pattern at lower read counts is an artifact of the minimum-read-count threshold for annotating a contig.