Fig. 6

Class I and Class II Olfr mRNAs show similar patterns of alternative polyadenylation. a Distribution of numbers of 3’UTR isoforms per Olfr. b Comparison between Class I and Class II Olfr genes’ distribution of length for 3’UTR groups. Mann–Whitney test (ns p > 0.05). See Fig. 4 for the definition of the groups. c Distribution of Olfr genes in 4 distinct quantitative 3’UTR isoform profiles. See Fig. 4 for the definition of the profiles. A Fisher-Freeman-Halton exact test shows no significant difference (p = 0.76)