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Specific expression of a silkencoding gene of Bombyx in the anterior salivary gland of Drosophila


SUCCESSFUL expression of genes transferred into distantly related species in which genetic functions have been maintained through evolution has been reported previously1–3. In the case of the silkmoth Bombyx mori and the fruitfly Drosophila melanogaster, both of which produce chorions (eggshells), Bombyx chorion genes are correctly expressed in Drosophila despite their estimated 240-Myr phylogenetic divergence1. Here we report that, although Drosophila does not produce silk, mechanisms regulating transcription have been conserved between the salivary gland of the fruitfly and the silk gland of the silkmoth larva.

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Bello, B., Couble, P. Specific expression of a silkencoding gene of Bombyx in the anterior salivary gland of Drosophila. Nature 346, 480–482 (1990).

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