The 16 amino acid sequence that is absent in the Dsim\Lhr2.Tag:HA compared to wild type Dsim\Lhr has been added back to the coding sequence.
Hybrid Hmr1 males (progeny of Hmr1 Dsim\Lhr2+16aa.T:Ivir\HA1 D. melanogaster females mated to D. mauritiana males) carrying Dsim\Lhr2+16aa.T:Ivir\HA1 are fully viable at room temperature and show 81-84% viability at 18[o]C (compared to hybrid Hmr1 male siblings not carrying Dsim\Lhr2+16aa.T:Ivir\HA1).
Dsim\Lhr2+16aa.Tag:HA partially rescues Dsim\Lhr1
Dsim\Lhr2+16aa.T:Ivir\HA1 partially complements Dsim\Lhr1, which is observed as approximately 16% hybrid male viability in the progeny of a cross of D. melanogaster females carrying Dsim\Lhr2+16aa.T:Ivir\HA1 to D. simulans Dsim\Lhr1 males.