A 24.4 kb SalI-SpeI fragment, containing 18.3 kb genomic sequences upstream of the fj ORF, and 4.3 kb downstream sequences.
Position of restriction fragment on reference sequence inferred by FlyBase curator.
One copy of fj+t24 partially rescues shortening of the wing and tarsal segment fusions seen in fjd1 homozygous animals. With 2 copies present, wing shortening is completely rescued and tarsal patterning is largely rescued, including restoration of the T2/T3 joint. Somatic clones lacking fj+t24 generated in a fjd1/fjd1 ; fj+t24 background in the eye cause non-autonomous polarity reversal in ommatidia on the equatorial side of the clone.