Sökning: "centromere regions"

Visar resultat 1 - 5 av 10 avhandlingar innehållade orden centromere regions.

  1. 1. Organization of centromere associated DNA in Chironomus pallidivittatus

    Författare :Hong He; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Genetics; Chironomus.; pericentric DNA; repetitive DNA; centromere; transposable element; cytogenetics; Genetik; cytogenetik;

    Sammanfattning : Centromeres have not yet been functionally defined in higher eu- karyotes, largely due to the huge amounts of repeated DNA in these regions of most species and difficulties of delimiting centromeric from pericentric regions. Also the latter have large quantities of mostly noncoding DNA, expressed cytologically as pericentric heterochromatin. LÄS MER

  3. 2. DNA in centromeres of Chironomus pallidivittatus

    Författare :Ching Liao; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Genetics; Chironomus; CEN DNA; transposable element; centromere; repetitive DNA; cytogenetics; Genetik; cytogenetik;

    Sammanfattning : The centromeres of most higher eukaryotes are embedded within large regions of constitutive heterochromatin and consist of large quantities of highly repetitive DNA. Transposable elements are also found in these regions. LÄS MER

  4. 3. Mediator and its role in non-coding RNA and chromatin regualtion

    Författare :Jonas O P Carlsten; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Mediator; transcription; centromere; telomere; tRNA; exosome;

    Sammanfattning : Mediator is a multiprotein complex required for the regulation of RNA Polymerase II (Pol II) transcription. Mediator transmits regulatory signals from activators and repressors to the Pol II machinery at the promoter, but the complex has also many other functions related to control of gene transcription. LÄS MER

  5. 4. Mammalian cell cycle regulation : characterisation of three genes expressed in proliferating cells

    Författare :Maria Starborg; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Cell cycle; DNA replication; licensing factor; mitosis; ceheckpoint regulator; centromere regions; cell proliferation marker; nucleolar protein; spermatogenesis;

    Sammanfattning : Proliferating cells undergo different phases in their life cycle. During interphase the cells grow and duplicate their DNA content, followed by a cell division phase, mitosis, which results in two daughter cells. LÄS MER

  7. 5. Recombination frequencies in hybrid females of inbred lines of Drosophila melanogaster

    Författare :Staffan Lake; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The intention of the present study was to examine the effect of the maternal genome and cytoplasm, of the attachment of extra heterochromatin of the transposing of heterochromatic regions into euchromatic parts and of temperature shocks during various stages of the development on recombination in Drosophila metanogaster. The access to marker genes along the X-chromosome induced in the inbred line made it possible to examine this array of different conditions in females with an isogenic background. LÄS MER