
Fig. 4. (A) Map showing location of genes and P-elements in the region of hbs, and the regions removed by x-ray-induced deletion of EP(2)2590. Deletion 12 embryos show perturbed ventral musculature in a subset of hemisegments (B, arrow), and this phenotype is also observed in Deletion 11/Deletion 12 embryos (C, arrow). (D) Innervation of muscles is normal (arrows show innervation at muscle 12) in hemisegments without defects, and also in the muscles present in the disrupted regions.