P-element insertion at the transcription start site.
ommatidium (with scaBP2)
scaBP1/scaBP2 has abnormal planar polarity phenotype, enhanceable by hh[+]/hhbar3
sca[+]/scaBP1 is a non-enhancer of abnormal cell polarity phenotype of Scer\GAL4hs.2sev, shgdCR3h.UAS.sgGFP
sca[+]/scaBP1 is a non-suppressor of abnormal cell polarity phenotype of Scer\GAL4hs.2sev, shgdCR3h.UAS.sgGFP
scaBP1/scaBP2 has ommatidium phenotype, enhanceable by hh[+]/hhbar3
sca[+]/scaBP1 is a non-enhancer of ommatidium phenotype of Scer\GAL4hs.2sev, shgdCR3h.UAS.sgGFP
sca[+]/scaBP1 is a non-suppressor of ommatidium phenotype of Scer\GAL4hs.2sev, shgdCR3h.UAS.sgGFP
A scaBP1/+ background does not affect the Scer\GAL4hs.2sev>shgdCR3h.Scer\UAS.T:Avic\GFP-rs ommatidial phenotype.
Dysgenic reversion of the mutation correlates with loss of P-element sequences. Weak sca allele.