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National Repository of Grey Literature 22 records found  beginprevious21 - 22  jump to record: Search took 0.00 seconds. 
Identification of Organisms Based on Analysis of Nucleotide Density Vectors
 Maděránková, Denisa ; Babula, Petr (referee) ; Schwarz, Daniel (referee) ; Provazník, Ivo (advisor)
Most methods for analysis of genomic data work with symbolic sequences. Numerically represented genomic sequences can be analyzed by signal processing methods. A new method of numerical representation of DNA sequences, nucleotide density vectors, is proposed in this thesis. Usability of this method for purposes of molecular species identification is tested on DNA barcoding sequences. DNA barcoding is modern and popular methodology based on comparison of short mitochondrial DNA sequences. Beside species identification by proposed method based on nucleotide density vectors, higher taxa rank identification (e.g. families) was also tested. Furthermore, dendrograms were constructed from standardly used evolutionary distances and distances between nucleotide density vectors and the dendrograms were compared.
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Molecular phylogeny and genome evolution of insect symbiotic bacteria
 NOVÁKOVÁ, Eva
Since the introduction of advanced molecular methods the research on insect bacterial symbioses underwent a major focus shift towards large scale phylogenetics and comparative genomics. These new fields provided answers to several fundamental questions of symbiont evolution, functional capabilities of the host-associated bacteria, and the role of symbionts in the host?s biology. However, the vast diversity and complexity of symbiotic relationships still leaves gaps in our understanding to a rich mosaic of various symbiont types, effects and transitions from facultative association to obligate mutualism. The presented study focuses on distribution, diversity, phylogenetic patterns, evolutionary transitions and genome evolution of two less known but ecologically diverse bacterial genera, Arsenophonus and Sodalis. The thesis also takes advantage of the knowledge on a well established symbiotic model between aphids and Buchnera and reveals several evolutionary patterns in the host and symbiont.
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National Repository of Grey Literature : 22 records found   beginprevious21 - 22  jump to record:
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