Activity of jef is essential for development of many cartilages. (A,E,I,M, lateral views, anterior towards the left; B,F,J,N, ventral views, anterior towards the left; C,G,K,O, dissected pharyngeal cartilages stained with Alcian, anterior towards the left; D,H,L,P, Alcian stained right pectoral and fin skeletons, anterior towards the top. (A-D) Wild type; (E-H) homozygous jeftw37; (I-L) homozygous jefhi1134; (M-P) heterozygous jeftw37/jefhi1134. All animals are 5 dpf. bh, basihyal; bsr, branchiostegal rays; cb, ceratobranchials; ch, ceratohyal; ch?, presumed ceratohyal; cl, cleithrum; ed, endoskeletal disk; co, scapulocoracoid; hs, hyosymplectic; m, Meckel’s cartilage; m/de? putative Meckel’s cartilage and dentary bone; op, opercule; pq, palatoquadrate. Scale bars: 100 μm in O for C,G,K,O; 100 μm in P for D,H,L,P.
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