Search for dissertations about: "introns"
Showing result 6 - 10 of 61 swedish dissertations containing the word introns.
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6. Biochemical and structural studies of pre-mRNA splicing
Abstract : When eucaryotic genes are expressed, they are transcribed into pre-mRNAs (precursor mRNAs) that need extensive processing before they can be exported from the nucleus as mRNAs and translated into proteins in the cytoplasm. One central processing event is splicing, which means removal of intervening, non-coding sequences, introns and joining of functional sequences, exons. READ MORE
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7. Regulation of adenovirus alternative pre-mRNA splicing : Functional characterization of exonic and intronic splicing enhancer elements
Abstract : Pre-mRNA splicing and alternative pre-mRNA splicing are key regulatory steps controlling geneexpression in higher eukaryotes. The work in this thesis was focused on a characterization of thesignificance of exonic and intronic splicing enhancer elements for pre-mRNA splicing. READ MORE
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8. Mutation and Diversity in Avian Sex Chromosomes
Abstract : Sex chromosomes are useful for the study of how factors such as mutation, selection, recombination and effective population size affect diversity and divergence.A comparison of gametologous introns in seven different bird species revealed a complete lack of diversity on the female-specific W chromosome. READ MORE
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9. Phylogenetic Support and Chloroplast Genome Evolution in Sileneae (Caryophyllaceae)
Abstract : Evolutionary biology is dependent on accurate phylogenies. In this thesis two branch support methods, Bayesian posterior probablities and bootstrap frequencies, were evaluated with simulated data and empirical data from the chloroplast genome. READ MORE
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10. Pre-mRNA processing in the polytene nuclei of chironomus tentans
Abstract : Gene expression of protein encoding genes in eukaryotic cells requires extensive intranuclear maturation processing of the transcribed pre-mRNA. Three such processes are known to occur. The 5' end is capped and the 3' end is determined by cleavage and polyadenylation. READ MORE