Polytene chromosomes normal.
A 'G' is inserted after nucleotide position 1873, resulting in a seven-amino-acid frameshift followed by a nonsense codon.
G
The insertion of a "G" at this point leads to a frameshift and early translation termination.
One copy of Su(z)23-1 is unable to suppress position effect variegation (PEV) at the w locus caused by In(1)wm4.
One copy of Su(z)23-1 moderately suppresses the telomeric position effect (TPE) in stocks carrying a variegating P{hsp26-pt-T}39C-5 insertion at the telomere of the left arm of chromosome two.
Hemizygotes die as larvae/pupae.
Heterozygotes have reduced viability. Fertile at 25oC.
Su(z)2[+]/Su(z)23-1 is an enhancer of visible phenotype of E2f1RNAi.UAS.cJa, Scer\GAL4GMR.PU
Su(z)2[+]/Su(z)23-1 is an enhancer of visible phenotype of E2f1RNAi.UAS.cJa, Scer\GAL4ptc-559.1
Su(z)2[+]/Su(z)23-1 is a suppressor | partially of visible phenotype of E2f1UAS.cNa, Scer\GAL4Act88F.PD
Su(z)2[+]/Su(z)23-1 is an enhancer of eye phenotype of E2f1RNAi.UAS.cJa, Scer\GAL4GMR.PU
Su(z)2[+]/Su(z)23-1 is an enhancer of first posterior wing cell phenotype of E2f1RNAi.UAS.cJa, Scer\GAL4ptc-559.1
Su(z)2[+]/Su(z)23-1 is a suppressor | partially of wing phenotype of E2f1UAS.cNa, Scer\GAL4Act88F.PD
Complements: Psc1. Complements: PscArp.1. Complements: Su(z)21. Complements: Su(z)2Arp.1.
Viable in trans to alleles of Psc and Su(z)2, though in some cases viability is reduced. Su(z)31 and Su(z)3eos show partial complementation.