An Hsp70 promoter drives expression of the IVa form of Ubx with a frameshift mutation within the homeodomain.
No transformations are observed.
Heat induction results in viable first star larvae indistinguishable from wild type.
Used as a control in heat shock experiments, by comparison to UbxIVa.hs.
Used as a control in heat shock experiments, by comparison to UbxIVa.hs.