Abstract
The Drosophila Gal4/UAS system allows the expression of any gene of interest in restricted domains. We devised a genetic strategy, based on the P-element replacement and UAS-y (+) techniques, to generate Gal4 lines inserted in Hox genes of Drosophila that are, at the same time, mutant for the resident genes. This makes possible to express different wild-type or mutant Hox proteins in the precise domains of Hox gene expression, and thus to test the functional value of these proteins in mutant rescue experiments.
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