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The Journal of Heredity 1994:85(3):218-221
© 1994 The American Genetic Association 85:218-221

research-article

New Mutants and Their Chromosome Assignment in the Fly Megaselia scalaris

W. Traut, G. Traut, H. G. Mertl, and A. Egelhaaf

Institut für Biologie, Medizinische Universität D-23538 Lübeck, Germany
The Zoologisches Institut, Universität Köln Köln, Germany

Abstract

We describe six new mutants, spontaneous or EMS-induced, and a previously isolated radiation-induced mutant of Megaselia scalaris Loew (Diptera, Phoridae). Five are eye-color mutants, one affects the segmentation of the abdomen, and one disturbs the regular form and arrangement of ommatidia in the compound eye. A complementation test exposed two pairs of alleles among the five eye-color mutants, leaving three different loci that affect eye pigmentation. Two of them influence the amount of xanthommatin synthesized, and one blocks the ommochrome pathway at the kynurenine step. We established chromosome assignment of the mutants by crossbreeding them with Y chromosome-autosome translocation strains.


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