Figure 2.
(a) Schematic of the structure of the vasopressin receptor gene avpr1a in voles and AVPR1A in primates. The black bars represent the transcribed region of the gene. The hatched bars represent the microsatellite sequences in the 5′ flanking region of the gene as discussed in the text. Numbers above the microsatellites indicate the relative position upstream of the transcription start site. (b) Autoradiograms illustrating the differences in vasopressin receptor binding in prairie voles with either short (top row) or long (bottom row) versions of the microsatellite in the avpr1a gene. Note the strain differences in the olfactory bulb (OB), lateral septum (LS) and the hypothalamus (HYP).