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Construction of an Unstable Ring-X Chromosome Bearing the Autosomal Dopa Decarboxylase Gene in Drosophila melanogaster and Analysis of Ddc Mosaics

Authors
  • Donald A. Gailey
  • Deborah L. Bordne
  • Ana Maria Vallés
  • Jeffrey C. Hall
  • Kalpana White
Publication Date
Feb 01, 1987
Source
PMC
Keywords
License
Unknown

Abstract

An unstable Ring-X chromosome, Ddc+- Ring-X carrying a cloned Dopa decarboxylase (Ddc) encoding segment was constructed. The construction involved a double recombination event between the unstable Ring-X, R(1)wvC and a Rod-X chromosome which contained a P-element mediated Ddc + insert. The resulting Ddc+-Ring-X chromosome behaves similarly to the parent chromosome with respect to somatic instability. The Ddc+-Ring-X chromosome was used to generate Ddc mosaics. Analyses of Ddc mosaics revealed that while there was no absolute requirement for the Ddc + expression in either the epidermis or the nervous system, very large mutant clones did affect the viability of the mosaic.

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