UAS †

UAS responders †

The strains carrying a construct including upstram activating sequence (UAS, β-gal-coding region downstream from the GAL4-binding sites). A responder gene downstream of UAS is expressed by crossing with a strain expressing GAL4, driven by specific promoters or by enhancer traps.

Some balancer chromosomes also have a UAS construct but they are not in this subset. Strains carrying a misexpression vector that includes UAS (GS lines and LA lines) are not in this subset.

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To obtain GAL4 drivers, see GAL4 or NP lines