Fig. 5. Phenotypes associated with local and long-range requirements of dpp. (A) A dpps11/dpps4 wing illustrating a typical shortvein phenotype. In this case, the distal ends of L2, L4 and L5 are truncated. These phenotypes are correlated with local vein promotion requirements for dpp. (B) A dppd5/dpphr56 wing showing a weak disk phenotype. Defects include failure to specify L3 and L4, as well as loss of the intervein between L4 and L5. This phenotype is very similar to that associated with clones of the dpp target gene sal (deCelis et al., 1996). (C) A dpp null clone showing the local effect on promotion of the PCV (compare with Fig. 2B). In this case, the PCV terminates precisely on the clone boundary (horizontal arrow). dpp has a more pronounced effect than gbb on L4, in this case truncating the vein back to the site of the PCV (vertical arrow). (D) A dpp null clone showing effects on the posterior PCV as well as L5. Again, dpp shows a local effect on the PCV but has a more pronounced effect on L5 than gbb (arrows).
