Sökning: "Chromosomal rearrangements"

Visar resultat 1 - 5 av 49 avhandlingar innehållade orden Chromosomal rearrangements.

1. 1. Mechanisms and Consequences of Chromosomal Instability in Malignant tumours

   Författare :Ylva Stewénius; Avdelningen för klinisk genetik; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; structural rearrangement; Ewing family tumour; Chromosomal instability; nephroblastoma; Wilms tumour; chromosomal aberration; anaphase bridge; subtelomeric FISH; breakage-fusion-bridge cycle;

   Sammanfattning : In this thesis, telomere deficiency with subsequent anaphase bridging was found to be associated with chromosomal instability in established colorectal cancer cell lines and in Wilms tumour. In colorectal cancer cell lines, anaphase bridging was observed to generate both numerical and structural chromosomal aberrations and was also associated with the presence of multipolar mitoses. LÄS MER

3. 2. Cytogenetic and molecular analysis of chromosomal rearrangements associated with neuropsychiatric disorders

   Författare :Dmitry Tentler; Niels Tommerup; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Genetics; Mental retardation; autism; Asperger syndrome; chromosomal rearrangement; Genetik; Clinical genetics; Klinisk genetik; Clinical Genetics; klinisk genetik;

   Sammanfattning : Genetic factors are important in the aetiology of neuropsychiatric disorders. Analysis of chromosomal abnormalities associated with these disorders may provide locus specific information for the identification of candidate genes and, subsequently, for our understanding of brain development and functioning. LÄS MER

4. 3. Chromosome rearrangements do not prevent gene flow in the common shrew, Sorex araneus : Analysis of two chromosomal hybrid zones in Sweden

   Författare :Yolanda Narain; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Genetics; Genetik; Clinical genetics; Klinisk genetik; Genetics; genetik; NATURAL SCIENCES;

   Sammanfattning : Two chromosomal hybrid zones of the common shrew, Sorex araneus, have been investigated: the Hällefors-Uppsala hybrid zone in central Sweden and the Abisko-Sidensjö hybrid zone in northern Sweden. The Hällefors (Hä) and Uppsala (Up) chromosome races consisted of biarmed autosomes only (2nA=18), and differed in the Robertsonian fusions of two arms, ko, pq, and kp, oq, respectively. LÄS MER

5. 4. Rates and patterns of genome evolution in Lepidoptera

   Författare :Karin Näsvall; Niclas Backström; Simon Martin; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chromosomal rearrangements; karyotype evolution; recombination rate; Lepidoptera; genome structure; molecular evolution; Biology with specialization in Evolutionary Genetics; Biologi med inriktning mot evolutionär genetik;

   Sammanfattning : The evolutionary consequences of genome restructuring and chromosomal rearrangements can be significant, but the underlying mechanisms are poorly understood. This thesis explores the relationships between genome restructuring, recombination, and maintenance of genetic diversity in different butterfly species. LÄS MER

7. 5. The evolution of flat periwinkles Littorina fabalis and L. obtusata emhasizing mitochondrial introgression and restricted recombination

   Författare :Petri Kemppainen; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Speciation; Local adaptations; Ecotypes; Mitochondrial DNA; Introgression; Restricted recombination; Positive selection; Inversions; Chromosomal rearrangements;

   Sammanfattning : The evolution of species takes in general very long time and different mechanisms are likely to operate during the various stages of this process. Accordingly speciation should be studied at different levels of species divergence. LÄS MER