UASt regulatory sequences drive expression of a 1A short splice variant of svr.
Scer\GAL4svr-PG33/svrsvr1A-short.UAS fails to rescue svrPG33
Expression of svrsvr1A-short.Scer\UAS driven by Scer\GAL4svr-PG33 fails to rescue the lethality associated with svrPG33/Y hemizygosity.