Heterozygous adults do not show a malformed leg phenotype. Homozygotes show 18 +/- 3% embryonic lethality. 29% of the dead embryos have dorsal anterior holes and others have abnormal head skeletons. 53 +/- 7% of homozygous larvae fail to form pupae. Terminal branching of the larval trachea is missing. Failure of apposition of the dorsal and ventral wing surfaces is seen in rare pharate adult escapers, resulting in a tube- or balloon-shaped wing.
15% of br1 ; bsEbr292/+ flies show a malformed leg phenotype. The predominant leg phenotype in br1/Y ; bsEbr292/+ flies is short, fat femurs and tibias. 10% of br5/+ ; bsEbr292/+ flies show a malformed leg phenotype. 7% of bsEbr292 Rho1J3.8 double heterozygotes show a malformed leg phenotype in at least one leg. 0% of bsEbr292 Rho1k02107b double heterozygotes show a malformed leg phenotype in at least one leg. 0% of bsEbr292 Rho1E3.10 double heterozygotes show a malformed leg phenotype in at least one leg. 0% of bsEbr292 RhoGEF204291 double heterozygotes show a malformed leg phenotype in at least one leg. 0% of bsEbr292 RhoGEF211-3 double heterozygotes show a malformed leg phenotype in at least one leg. 2% of bsEbr292 zipEbr double heterozygotes show a malformed leg phenotype in at least one leg. 0% of bsEbr292 zip1 double heterozygotes show a malformed leg phenotype in at least one leg. 0% of bsEbr292 zip33-1 double heterozygotes show a malformed leg phenotype in at least one leg.
Selected as: a mutation that enhances the br1 malformed leg phenotype.