embryos that lack both maternal and zygotic sfl
exhibit a segment polarity phenotype. Salivary glands are present in these mutants. Females carrying frc00073
ventral follicle cell clones do not produce dorsalized embryos.
When homozygous clones are made in the follicle cells, no dorsalisation phenotypes are seen in the resulting embryos.
Homozygotes die at the late pupal stage. Embryos derived from homozygous germline clones die during embryogenesis with strong segment polarity and mesodermal patterning defects that can be paternally rescued to viability.