E(ftz)18191819/E(ftz)1819[+] is an enhancer | maternal effect of partially lethal | heat sensitive phenotype of ftz5/ftz13
E(ftz)18191819/E(ftz)1819[+] is an enhancer of embryonic segment phenotype of ftz5/ftz13
E(ftz)18191819 dominantly enhances the lethality of ftz5/ftz13 animals at 26.5oC (fewer animals survive to adulthood). This interaction is a maternal effect. E(ftz)18191819 dominantly enhances the segmentation defects seen in ftz5/ftz13 embryos at 27.5oC; 97.8% of the embryos have segment defects and 31.3% have at least 3 ftz-dependent segments affected.