Genomic fragment containing Lhr. The fragment also includes the complete coding sequence of the adjacent Dsim\Bap55 gene.
Dsim\Lhr+tMa fully complements Dsim\Lhr1, which is observed as hybrid male inviability in the progeny of a cross of D. melanogaster females carrying Dsim\Lhr+tMa to D. simulans Dsim\Lhr1 males.