Expression of one copy of Uba2Scer\UAS.cLa under the control of Scer\GAL4elav-C155 generally results in the production of apparently normal adult progeny with no or very mild lethality at 29oC. Expression of two copies of Uba2Scer\UAS.cLa under the control of Scer\GAL4elav-C155 results in more severe lethality.