embryo | gastrula stage, with sqh1
Embryos expressing sqhTA.T:Avic\GFP-EGFP do not exhibit gastrulation defects.
In embryos expressing sqhTA.T:Avic\GFP-EGFP in a sqh1 mutant background apical constriction appears more continuous than in wild type, with fewer rapid phases of constriction that are lower in magnitude. Constriction occurs more slowly than in control embryos.
sqhTA.EGFP fails to rescue sqh1
Expression of sqhTA.T:Avic\GFP-EGFP does not rescue the nuclear migration and uneven cellularization seen in sqh1 mutant embryos. No adult flies are observed.