Intragenic deletion within SxlfPb.
Deletion of sequences from 0 to -5.0 (coordinates according to FBrf0042036). The P-element present in the progenitor is still present at coordinate 0.
Fails to complement Sxl alleles that are defective in somatic function, suggesting that this allele probably eliminates all known somatic functions.
Isolated on the basis of its failure to complement Sxlf9.