A sequence predicted to adopt a stable hairpin structure has been inserted between the two mutated initiation codons and a frame-shift (CCACTGG instead of CCACCTGG) has been introduced downstream of the second initiation codon. The hairpin structure has been introduced to prevent translation from in-frame methionine codons downstream.
Both osk187/Df(3R)p-XT103 and oskA87/Df(3R)p-XT103 females that carry either the oskmM1SLmM2 transgene are able to lay eggs but the resulting embryos lack abdomens.
oskmM1SLmM2 partially rescues oskA87/Df(3R)p-XT103
oskmM1SLmM2 partially rescues osk187/Df(3R)p-XT103
Expression of the oskmM1SLmM2 transgene rescues the egg-less phenotype of oskA87/Df(3R)p-XT103 and osk187/Df(3R)p-XT103 females but the embryos produced lack an abdomen.