FlyBase curator comment: this entry is used to capture phenotypic information when the particular allele (or allele combination) used by the author could not be determined but the context of the experiment suggests that the phenotype being described is some kind of loss of function.
Segments T2 and T3 resemble T1 in exdunspecified mutant embryos, and A1 resembles the posterior abdominal segments. Abdominal transformations are seen in double mutant combination with Pc like mutants.
exdunspecified is rescued by exd+t13