Construct: 2.5kb XhoI-EcoRI fragment of osk 5' flanking sequence including coding region for first 18 amino acids joined to 2.2kb fragment including the osk coding region, joined to a 2kb fragment including the bcd 3'UTR sequence.
lethal | dominant | maternal effect
embryo | maternal effect
Has no effect on the posterior accumulation of G-iα65A protein.
Progeny of mothers carrying one copy of this allele are all bicaudal. Anterior pole cells form.