The Act5C promoter drives expression of a mutated form of fz that contains a S554F amino acid substitution.
abnormal planar polarity | adult stage, with fz21
visible, with fz21
leg, with fz21
leg joint | ectopic, with fz21
Adults carrying fz25B2.Act5C in a fz21 background have an average of 2.3 +/- 0.7 extra tarsal joints in the leg compared to wild type.
fz25B2.Act5C shows poor rescue of the wing margin phenotype of fz21 fz2C1 double homozygous clones.