When the 'simw[501]' mitochondrial genome, which contains the Dsim\mt:tRNA:Yw501 allele, is paired with the nuclear Aats-tyr-mtOre.V275A rescue allele (Aats-tyr-mtOre.V275A, Df(2R)BSC606), scutellar bristle length is intermediate between the relatively shorter scutellar bristles produced by pairing with the Aats-tyr-mtOre mutant allele (Aats-tyr-mtOre, Df(2R)BSC606), and the relatively longer scutellar bristles produced by pairing with the wild type nuclear Aats-tyr-mtAutW132 allele (Aats-tyr-mtAutW132, Df(2R)BSC606).
Flight performance is relatively strong while climbing ability is intermediate in flies in which the 'simw[501]' mitochondrial genome, which contains the Dsim\mt:tRNA:Yw501 allele, is paired with the nuclear Aats-tyr-mtOre.V275A rescue allele (Aats-tyr-mtOre.V275A, Df(2R)BSC606). The morphology of indirect flight muscle mitochondria is only weakly affected.
Aats-tyr-mtOre.V275A rescues the developmental delay seen in mitochondrial-nuclear hybrid strains containing the D. melanogaster nuclear genome and a D. simulans mitochondrial genome where the nuclear genome contains Aats-tyr-mOre/Df(2R)BSC606 and the mitochondrial genome contains Dsim\mt:tRNA:Yw501.