The coding homologs of the RRs show no enhancer activity.
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The coding homologs of the RRs in medaka (column 2), mouse (column 3), and elephant shark (column 4) show no enhancer activity. For clarity, we included the result of enhancer activity of the RR regions (column 1). For ttc29RR no homologous coding sequences were found in medaka and shark. While only one stage is represented, the monitoring of the reporter gene expression is performed throughout the embryonic development (except for the mouse transgenic assay where the specific stage is annotated on the figure). For dock9exon-medaka, both exons from both paralogs were tested (Table S3). Branch lengths and loci are schematic.