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.
Muscles (including LT4) in mutant embryos often have defects in their growth towards the epidermal attachment sites and have abnormal shapes.
Mosaic animals in which the retina is homozygous for sd-5unspecified have photoreceptor axon projection patterns which are essentially indistinguishable from controls.