The following information accompanied stocks donated to the Bloomington Drosophila Stock Center by Jared Toettcher, Princeton University.
P{UAS-OptoSOS}attP40 is a homozygous viable and fertile insertion on the second chromosome into attP40 (FBti0114379).
P{UAS-OptoSOS}attP2 is a homozygous viable and fertile insertion on the third chromosome into attP2 (FBti0040535).