Probably acts as a transcriptional regulator. Required for the specification of the tarsal segment. Also involved in antenna development. Leg imaginal disk at the central region of the tarsus and in eye antenna disk at the basal cylinder. 'Bric-a-brac' means 'jumble' in French (referring to the mutant ovary phenotype). A paper showing that the protein forms homodimers via the BTB domain has been retracted by the authors, due to concerns regarding the validity of their data. However, they still consider that their main conclusions may be correct and require further testing. Probable cloning artifact.