The Heterochromatic ABO Locus May Overlap with the Region Containing Repeats Encompassing Mobile Elements andStellate Genes on the X Chromosome of Drosophila melanogaster

The Heterochromatic ABO Locus May Overlap with the Region Containing Repeats Encompassing Mobile... A deficiency of certain heterochromatic regions (ABO loci) of various chromosomes dramatically distorts the early embryo development in the progeny of females carrying mutation in the abnormal oocyte (abo) gene, which is located in euchromatin of chromosome 2. One ABO locus (X-ABO) is in X-heterochromatin distal to the nucleolus organizer. A cluster of the Stellate repeats is located in the same heterochromatic block. Deletions of various fragments from distal heterochromatin were tested for the effect on expression of the abo mutation. The X-ABO locus was assigned to X-chromosomal heterochromatin segment h26 and may include repeats consisting mostly of mobile elements and defective Stellate copies. A major part of the regular Stellate tandem repeats proved to be distal of the X-ABO locus. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

The Heterochromatic ABO Locus May Overlap with the Region Containing Repeats Encompassing Mobile Elements andStellate Genes on the X Chromosome of Drosophila melanogaster

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Publisher
Kluwer Academic Publishers-Plenum Publishers
Copyright
Copyright © 2004 by MAIK “Nauka/Interperiodica”
Subject
Biomedicine; Human Genetics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1023/B:RUGE.0000016983.38493.93
Publisher site
See Article on Publisher Site

Abstract

A deficiency of certain heterochromatic regions (ABO loci) of various chromosomes dramatically distorts the early embryo development in the progeny of females carrying mutation in the abnormal oocyte (abo) gene, which is located in euchromatin of chromosome 2. One ABO locus (X-ABO) is in X-heterochromatin distal to the nucleolus organizer. A cluster of the Stellate repeats is located in the same heterochromatic block. Deletions of various fragments from distal heterochromatin were tested for the effect on expression of the abo mutation. The X-ABO locus was assigned to X-chromosomal heterochromatin segment h26 and may include repeats consisting mostly of mobile elements and defective Stellate copies. A major part of the regular Stellate tandem repeats proved to be distal of the X-ABO locus.

Journal

Russian Journal of GeneticsSpringer Journals

Published: Oct 18, 2004

References

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