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  • Title: Localization of the ribosomal RNA genes in Drosophila simulans.
    Author: Schäfer U, Schäfer M.
    Journal: Chromosoma; 1980; 79(3):287-91. PubMed ID: 6772417.
    Abstract:
    In situ hybridization of cloned rRNA genes from Drosophila melanogaster to D. simulans metaphase chromosomes shows that in the tested wild type strains both sex chromosomes contain a nucleolus organizer region. Silver grain counts support the published data that the X chromosomal rRNA gene number is significantly higher than the Y chromosomal.
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