Construct: EcoRI-BamHI fragment from the nos gene, including the nos 5' and coding region up to the stop codon is fused to the MluI-XbaI fragment from the bcd 3' UTR, that includes the RNA localization signals.
lethal - all die during embryonic stage | maternal effect
some die during embryonic stage | maternal effect
embryonic epidermis | maternal effect
Embryos show a strong bicaudal phenotype.