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.
binunspecified mutants do not express makers of the trunk visceral mesoderm. Anterior migration of the caudal visceral mesoderm precursors stalls during stage 11. There is a strong reduction in the number of longitudinal visceral muscle precursors. The morphology of the foregut and hindgut visceral mesoderm appears normal.