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J Mol Biol. 1983 Jun 15;167(1):37-56.

Y chromosomal DNA of Drosophila hydei.


Six recombinant DNA clones are described, which are derived from the Y chromosome of Drosophila hydei. They reveal characteristic features of Y chromosomal DNA sequences. Three of the cloned inserts are Y-specific and are members of the same family of repeated sequences associated with the lampbrush loop-forming fertility gene "nooses" in the short arm of the Y chromosome. The other three cloned sequences are members of three different families of repeated sequences, but display a small amount of homology to one another and to the family of the nooses sequences. These three cloned sequences are found preferentially in the Y chromosome, but also in other chromosomal positions. The Y chromosomal copies are located in the short arm of the Y chromosome. The other copies are found in autosomal kinetochore-associated heterochromatin or, for one of the cloned sequences, in one band of the giant chromosome 4, in addition to the kinetochore heterochromatin.

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