Local hopping of the P{lacW}SynP1 insertion has resulted in a replicative second insertion (P{lacW}SynP2) which is located in intron 9 of Syn (and also in intron 1 of the nested Timp gene).
Local hopping of P{lacW}SynP1 produces a replicative second insertion within the first intron of the Timp gene.
Syn expression appears wild-type in this mutant.