Fig. 1. Morphological analysis of dorsalized mutants. Pictures of live embryos at approximately 28-32 hours. (A) Wild type. (B) C4 dorsalized Df^st7 mutant. (C) Extensive degeneration in Df^st7 mutant in TL/WIK hybrid background. (D) C3 dorsalized embryo from cross of wild-type male and Df^st7/+ female. (E) C4 dorsalized Df^st8 mutant. (F) Most homozygous vox^st9 embryos have a wild-type appearance. (G-I) Df^st7/vox^st9 mutants have variable phenotype, ranging from wild-type to strongly dorsalized. C4 (G), C3 (H) and C1 (I) phenotypes are shown. Arrowhead in I indicates reduced ventral tail fin.

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