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Kolesnikova, T.D., Koriakov, D.E., Semeshin, V.F., Beliaeva, E.S., Zhimulev, I.F. (2001). [Interline differences in morphology of the precentromeric region of polytene X-chromosome in Drosophila melanogaster salivary glands]  Genetika, Moscow 37(12): 1632--1641.
FlyBase ID
FBrf0144912
Publication Type
Research paper
Abstract

Morphology of the Drosophila melanogaster polytene X chromosome section 20 in normal flies, in strains carrying inversions that break pericentric heterochromatin at different points, and at the background of the Su(UR)ES mutation has been examined. In all of the strains carrying the Su(UR)ES mutation section 20 displayed a distinct banding pattern till to the section 20F, while in the wild-type strains this region was represented by beta-heterochromatin. The strains carrying different inversions substantially differed in the number and morphology of bands forming section 20. In the Su(UR)ES mutants the most proximal X chromosome euchromatin gene, su(f), is mapped to the boundary between sections 20E and F, while rDNA forming the middle part of the X chromosome mitotic heterochromatin is located in the proximal part of section 20F. All large bands observed in section 20 of the w; Su(UR)ES strain were also present in In(1)sc4; Su(UR)ES, which breaks heterochromatin in the distal part. Hence, the bands of polytene chromosome section 20 are virtually devoid of mitotic heterochromatin.

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    Language of Publication
    Russian
    Additional Languages of Abstract
    English
    Parent Publication
    Publication Type
    Journal
    Abbreviation
    Genetika, Moscow
    Title
    Genetika
    Publication Year
    1965-
    ISBN/ISSN
    0016-6758
    Data From Reference
    Aberrations (1)
    Genes (3)