363bp deletion that removes the splice acceptor of the tono second exon and a large part of the sequence encoding the BTB domain.
tono1 has indirect flight muscle | adult stage phenotype, suppressible by Mhc10
tono1 is rescued by tonofTRG10059.sfGFP-FT
tono1 is rescued by Scer\GAL4Act88F.PB/tonoUAS.ORF.GW.Tag:HA