A P-insertion-induced lethal hypomorphic allele with the unusual distinction of displaying a mosaic intersex phenotype in homozygous mutant diplo-X clones induced by mitotic recombination; hence, appears to be defective in the cellular maintenance of the female sexual commitment. Under dysgenic conditions, can mutate further to less extreme or to more extreme condition. Partially complements Sxlf7,M1, generating masculinized individuals; partially complements Sxlf2593, generating sterile females; fully complements Sxlf9.
Partial loss-of-function allele. Only partially complemented by Sxlf7,M1. Fully complements Sxlf9 and Sxlf2. Homozygous germline clones develop normally.