Fig. 3. Subcellular localisation of wg transcripts in Drosophila, Coboldia and Clogmia embryos. (A-C) The segmental expression pattern of wg in extended germband embryos is conserved in Drosophila, Coboldia and Clogmia (anterior towards the left, dorsal upwards). (D-F) At blastoderm stages, wg transcripts accumulate apically in Drosophila and Coboldia, but not in Clogmia. (G-I) After gastrulation, wg transcripts accumulate apically in all three species. Localisation of wg in germband extended embryos appears to be reproducibly less efficient in Clogmia than in Coboldia and Drosophila, with a proportion of transcripts detected basally. Scale bar: 385 µm in A; 240 µm in B; 400 µm in C; 83 µm in D,F; 50 µm in E,G,I; 27 µm in H.