Abstract
During the screening of aDrosophila melanogaster YAC library with DNA from the minichromosomeDp(1;f)1187 we isolated a clone, yw20D5, which contains a new subtype of 1.688 satellite DNA. Although the sequences of several monomers subcloned from the YAC show a considerable variation in length, the derived consensus sequence is 356-bp long. This new subtype and the one constituted by the 353-bp repeats are both located on the left arm heterochromatin of chromosome 3, arranged in separate arrays. Despite their autosomal location, phylogenetic relationships among 1.688 satellite sequences suggest that they may have originated from the 359-bp repeats of the X chromosome heterochromatin. We have used the new 356-bp repeats to investigate whether sequences related to the 1.688 satellite are dispersed along the euchromatic arms of the autosomes in a similar way to that in which they are found along the X chromosome euchromatin.
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Losada, A., Villasante, A. Autosomal location of a new subtype of 1.688 satellite DNA ofDrosophila melanogaster . Chromosome Res 4, 372–383 (1996). https://doi.org/10.1007/BF02257273
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DOI: https://doi.org/10.1007/BF02257273