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The effects of tandem duplications on crossing over inDrosophila melanogaster

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Abstract

Each of three tandem duplications,Bar, Beadex r49k andDp(I)z-w, when homozygous increases crossing over in their environs in excess of the genetic length of the duplication.

Detailed crossing over studies withDp(I)z-w showed that in the duplication homozygotes interference is reduced and when combined with heterologous autosomal inversions, double crossovers occurring in less than 10 map units are readily recovered.

These results are interpreted in terms of the concept of effective pairing and suggest that tandem duplications increase crossing over by increasing effective pairing.

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Authors and Affiliations

  1. Department of Genetics, Univerity of California, Davis, California

    M. M. Green

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  1. M. M. Green
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Green, M.M. The effects of tandem duplications on crossing over inDrosophila melanogaster . Genetica 33, 154–164 (1963). https://doi.org/10.1007/BF01725758

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  • DOI: https://doi.org/10.1007/BF01725758

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