Flies expressing Hsap\SMN1Scer\UAS.cMa under the control of Scer\GAL4Mef2.PR are viable at 25[o]C, but lethal at 29[o]C. Viable flies exhibit an age-dependent reduction in climbing ability compared to controls.
Pupae expressing Hsap\SMN1Scer\UAS.cMa under the control of either Scer\GAL4how-24B or Scer\GAL4da.PU have increased axial ratios.
Overexpression of Hsap\SMN1Scer\UAS.cMa under the control of Scer\GAL4how-24B results in pupal lethality; pupae develop until a relatively late stage, but fail to eclose. A variety of morphogenetic and differentiation defects can be seen; wings and legs are abnormally positioned towards the anterior end of the pupa and morphogenetic defects are seen in the head, legs and wings. A necrotic ring terminates posterior development. In some lines, a few flies escape lethality. The tarsi of the second and third pair of legs are abnormal in these escapers.