mys8/mysolfC-A459.1F1 flies survive and show no defect in jumping ability. They show a reduced olfactory response to isoamyl acetate but respond normally to ethyl acetate. mysolfC-A459.1F1 fails to complement mysolfC-x3, mysolfC-x5, mysolfC-x10 and mysolfC-x17 when the olfactory response to isoamyl acetate is assayed. When the olfactory response to ethyl acetate is assayed, mysolfC-A459.1F1 fails to complement mysolfC-x3 and mysolfC-x10.