Fig. 3

Major polyadenylation sites for twelve tetrapod species in which the polyadenylation profile differed from that of the human. Refer to the legend of Fig. 1 for gene abbreviations and the use of colors and that of Fig. 2 for ways to show major polyadenylation sites with numbers of supportive polyA-containing reads. Asterisks in P. przewalskii show truncated major noncoding regions. Changes in mRNA polyadenylation sites as compared to the human noted in text are highlighted by a circle. Note that polyadenylation sites for P. vitticeps ND5 mRNA could not be surely identified due to the insertion of an extra copy of MNCR. Also note that there was a minor polyadenylation site 242 bp downstream of the ND5 stop codon as supported by 6 polyA-containing reads in A. mississippiensis (data not shown) and this site may function as a polyadenylation site for the ND5 mRNA