UASt regulatory sequences drive expression of an inverted repeat.
D.melanogaster flies expressing Obp56eGD1308 under the control of Scer\GAL4Act5C are seven times more likely to choose Morinda medium (containing 4% ripe Morinda citrifolia fruit by weight - this is the normal food of D.sechellia) in a behavioural assay than control flies. 98% of control flies avoid Morinda medium, whereas only 85% of the flies expressing Obp56eGD1308 under the control of Scer\GAL4Act5C avoid Morinda medium.