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Further data on the polarity of the paba1 locus of Aspergillus nidulans

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Abstract

Newly mapped paba1 alleles are better distributed on the fine-structure map than those mapped earlier. They provide a proximal, a middle and a distal cluster, of four, one and four sites respectively (Fig. 1). The recombination fractions indicate map expansion (Fig. 2). The large samples of paba + recombinants classified show that classes I and I III are positively correlated with increased recombination fraction, and classes I II and I II III are negatively correlated (Fig. 3). No polarity reversal was found. The results are explained in terms of a hybrid DNA model for crossing over.

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Authors and Affiliations

  1. Genetisch Laboratorium der Rijksuniversiteit, Kaiserstraat 63, Leiden, The Netherlands

    A. M. Millington-Ward, F. B. J. Koops & Corma van der Mark-Iken

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  1. A. M. Millington-Ward
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  2. F. B. J. Koops
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  3. Corma van der Mark-Iken
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Millington-Ward, A.M., Koops, F.B.J. & van der Mark-Iken, C. Further data on the polarity of the paba1 locus of Aspergillus nidulans . Genetica 42, 13–24 (1971). https://doi.org/10.1007/BF00154836

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  • DOI: https://doi.org/10.1007/BF00154836

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