, Volume 99, Issue 6, pp 407–412 | Cite as

A jumping sex determining factor in the flyMegaselia scalaris

  • Walther Traut
  • Ute Willhoeft


To test earlier reports on changes of the sex determining linkage group inMegaselia scalaris, we used a combination of a cytogenetic and a phenotypic marker in a laboratory strain as a detection system for rare cases in which linkage of the marker and the Y chromosome was disrupted. From some of the exceptional males detected in this system we established strains with a different chromosome pair acting as the sex chromosome pair. Cytogenetic analysis, crossbreeding tests with a phenotypic marker and DNA blot hybridization with cloned DNA probes indicated that an epistatic male determining factor had moved to one of the former autosomes at a frequency of at least 0.06%.


Linkage Group Developmental Biology Rare Case Determine Factor Chromosome Pair 
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Copyright information

© Springer-Verlag 1990

Authors and Affiliations

  • Walther Traut
    • 1
  • Ute Willhoeft
    • 1
  1. 1.Institut für BiologieMedizinische Universität LübeckLübeckFederal Republic of Germany

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