Fig. 1.

Oxtr gene structure and homology in prairie voles and humans. a RNA-seq evidence of Oxtr gene structure in prairie voles. The region shown is micOch1.0 scaffold JH996431.1: 26,340,626–26,358,364. b Gene schematic of OXTR in humans and Oxtr in prairie voles. Exons are indicated by boxes (coding, white; untranslated, gray). Introns are shown with solid lines. The black boxes below the transcripts delineate a CpG island identified using the CpG island function of the sequence manipulation suite [40]. Gray boxes above the transcripts denote conserved regions of the CpG island labeled as MT2 and exon 3. These conserved regions were assayed for DNA methylation