Abstract
The genome of Drosophila melanogaster contains a class of repetitive DNA sequences called the He-T family, which is unusual in being confined to telomeric and heterochromatic regions. The specific He-T fragment designated Dm665 was cloned in yeast by selection for an autonomously replicating sequence (ARS). Dm665 contains a restriction fragment length polymorphism (RFLP) that is specific to males and thus derives from the Y chromosome. Deletion mapping using X-Y translocations indicates that sequences homologous to Dm665 occur in at least one major cluster in each arm of the Y chromosome. Among 20 yeast artificial chromosome (YAC) clones containing Drosophila sequences homologous with Dm665, four clones derive from defined regions of the long arm of the Y and two from the short arm. The sequence of Dm665 is 2443 bp long, consists of 59% A+T, and contains no significant open reading frames or direct or inverted repeats. However, Dm665 contains a region of 650 bp that shares homology with portions of the X-linked locus Stellate.
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Danilevskaya, O.N., Kurenova, E.V., Pavlova, M.N. et al. He-T family DNA sequences in the Y chromosome of Drosophila melanogaster share homology with the X-linked Stellate genes. Chromosoma 100, 118–124 (1991). https://doi.org/10.1007/BF00418245
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DOI: https://doi.org/10.1007/BF00418245