title: Contribution of the geneextramacrochaetae to the precise positioning of bristles inDrosophila.
abstract: We examine the effect of mutations in theextramacrochaetae (emc) gene on the positioning of macrochaetes on the notum ofDrosophila. We show that, inemc mutants, most of the precursor cells appear earlier than in wild-type individuals, consistent with an antagonizing effect ofemc on the action of the proneural genesachaete andscute. We also show that reducingemc function affects the position of three bristles and/or of their precursors, but has no marked effect on the positioning of the other bristles.
authors.affiliation: Laboratoire de Neurobiologie, University Libré de Bruxelles, 67 rue des Chevaux, B-1640, Rhode-St-Genèse, Belgium.
authors.forename: Françoise
authors.initials: F
authors.lastname: Huang
authors.affiliation: Laboratoire de Neurobiologie, University Libré de Bruxelles, 67 rue des Chevaux, B-1640, Rhode-St-Genèse, Belgium.
authors.forename: Jacques
authors.initials: J
authors.lastname: van Helden
authors.affiliation: Laboratoire de Neurobiologie, University Libré de Bruxelles, 67 rue des Chevaux, B-1640, Rhode-St-Genèse, Belgium.
authors.forename: Christine
authors.initials: C
authors.lastname: Dambly-Chaudière
authors.affiliation: Laboratoire de Neurobiologie, University Libré de Bruxelles, 67 rue des Chevaux, B-1640, Rhode-St-Genèse, Belgium.
authors.forename: Alain
authors.initials: A
authors.lastname: Ghysen
keywords: Drosophila; Extramacrochaetae; Pattern formation; Sensory bristle positioning