Mutation of Sry-δ protein binding site B located between -14bp and -1bp (relative to the transcription start site) in the bcd promoter.
bcdp2107B- partially rescues bcd8
One copy of bcdB-.T:Ecol\lacZ does not rescue the bcd8 phenotype. Two copies of bcdB-.T:Ecol\lacZ slightly rescue the bcd8 phenotype.