Abstract
Mutants at the bobbed (bb) locus in Drosophila melanogaster are characterized by short, thin bristles, prolonged developmental time and thinning of the cuticle, commonly referred to as etching1. Extensive variability of expression of bb mutants is a classical observation-some alleles are visually undetectable from wild-type ones whereas other alleles are lethal. Classical genetic analyses have placed the locus of bb alleles in the proximal heterochromatic region of the X chromosome close to the nucleolar organizer (NO) region and in the short arm of the Y chromosome, again near the NO2. A high frequency of reversion is characteristic of bb mutants1.
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WILLIAMSON, J., PROCUNIER, J. & CHURCH, R. Does the rDNA in the Y Chromosome of Drosophila melanogaster Magnify?. Nature New Biology 243, 190–191 (1973). https://doi.org/10.1038/newbio243190a0
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DOI: https://doi.org/10.1038/newbio243190a0
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