Fig. 7
Craniofacial expression patterns of candidate genes in developing heads of two contrasting Arctic charr morphs (SB and PL). In situ hybridization shows the overlapping expression pattern of Ahr2b, Apaf1, Cfl1, Foxq1 and Jup at the 238 (Ï„ s) time-point. Ventral and lateral views indicate the overlapping expression of the genes in the area surrounding the mouth, lower jaw and pharyngeal arches. An extended expression pattern is observed for Cfl1 and Foxq1 in ventral facial elements and pharyngeal arches of SB morph (marked area). Furthermore, Cfl1 had higher expression in the fronto-nasal region in SB (marked area). Chd4, Cspp1 and Dlg1 showed diffuse expression in most parts of the head mesenchyme without noticeable spatial expression differences between the two morphs