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Die Geschlechtsbestimmung beiMegaselia scalaris Loew (Phoridae)

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Summary

The determination of male sex of the Phorid,Megaselia scalaris, is effected through an epistatically-operating realizer which appears to lie terminally on a certain end of the chromosomes and which ist exchanged between the three non-homologous chromosomes by a regular translocation process. This process seems to be a praemeiotic event as the exceptional types often appear in clusters. Under the assumption that every cluster is the effect of one translocation, the translocation-frequency from the III-chromosome is estimated at ca. 0.3%, from the I-chromosome and from the II-chromosome at ca. 0.08%. The theoretical aspect of this type of sex determination is discussed. Details about the cytology ofMegaselia are reported.

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  1. Institut für Allgemeine Biologie der Universität Wien, Schwarzspanierstraße 17, A-1090, WienIX, :Osterreich

    F. Mainx

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  1. F. Mainx
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Mainx, F. Die Geschlechtsbestimmung beiMegaselia scalaris Loew (Phoridae). Zeitschrift für Vererbungslehre 98, 49–60 (1966). https://doi.org/10.1007/BF00898296

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  • DOI: https://doi.org/10.1007/BF00898296

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