These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: [Changes in the duration of replication of the polytene chromosome region during position effect in Drosophila melanogaster].
    Author: Bol'shakov VN, Zhimulev IF.
    Journal: Genetika; 1990 May; 26(5):847-55. PubMed ID: 2118873.
    Abstract:
    Replication pattern of the X chromosome 2B region translocated to the pericentric heterochromatin in the 2L chromosome within the T(1; 2) dorvar7 rearrangement which causes position effect was studied. It was found that this pattern is affected by the 2B region morphology. When normal, i.e. with decondensed bands in this region, it completes replication early. But after compaction, i.e. fusion of bands in the 2B region into dense block, due to position effect, its late replication was observed, together with the most late replicating intercalary heterochromatin regions in the X chromosome and the 75C-80A-C segment of the 3L chromosome. Possible mechanisms of replication delay and their role in promoting the position effect are discussed.
    [Abstract] [Full Text] [Related] [New Search]