Construct: Nucleotide substitution: each SRE has had a mutation introduced into it by PCR.
lethal - all die during embryonic stage | maternal effect
some die during embryonic stage | maternal effect
embryonic epidermis | maternal effect
Embryos show a bicaudal phenotype, thus the bicaudal phenotype characteristic of nosb.n.T:Ivir\HA1 is not suppressed in this derivative allele.