Insertion in the 5' UTR.
Heterozygotes often have ectopic wing vein material.
polybromoEY14080 has visible | dominant phenotype, enhanceable by Su(var)3-3[+]/Su(var)3-3ΔN
polybromoEY14080 has wing vein | ectopic phenotype, enhanceable by Su(var)3-3[+]/Su(var)3-3ΔN