Imprecise excision of the P{lacW} insertion in talS011041, resulting in a deletion of tal sequences.
In legs containing homozygous clones induced after tarsal intercalation, all the tarsal segments are present. However, they are not morphologically normal, as no joint structures are formed in the middle of large clones covering the distal part of the tarsal segments. Mutant cells can contribute to those remaining joint structures that do form, indicating that tal acts non-autonomously.
