Fig. 1

ASIP locus in quail. a Schematic representation of the ASIP locus in quail. Each gene is represented with a specific color: the coding exons are schematized by dark rectangles while the 5′ UTR exons are represented in a lighter shade. The 5′ UTR exons with potential transcription start sites are symbolized by a rectangle with an arrow. b Presentation of the ASIP gene and ASIP transcripts. We expect nine types of transcripts encoding the same ASIP protein. For the exons, we used the names proposed by Gluckman and Mundy [23]. The coding exons are Ce1, Ce2 and Ce3. We did not consider the ASIP transcript-6 as proposed by [23], because the sequence of the 5′ UTR exon relative to this transcript (novel6) was not included in this region of quail chromosome 20. The double pink arrow shows the 21.4-kb region highlighted in this study (see also Fig. 3)