Sökning: "evolution of control sequences"

Visar resultat 1 - 5 av 20 avhandlingar innehållade orden evolution of control sequences.

1. 1. Genomics of Arbuscular Mycorrhizal Fungi : Expanding knowledge, one assembly at a time

   Författare :Merce Montoliu-Nerin; Anna Rosling; Hanna Johannesson; Nicolas Corradi; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; genomics; arbuscular mycorrhizal fungi; phylogenomics; DNA; evolution; Bioinformatics; Bioinformatik; Biologi med inriktning mot molekylär evolution; Biology with specialization in Molecular Evolution;

   Sammanfattning : Most life forms that inhabit Earth today are still unknown or are difficult to study. Accessing their DNA can give us information of their biology, ecology, and evolution, even when unculturable. The research here presented focused on method development for genomic research of non-model organisms. LÄS MER

3. 2. Investigation of Mechanics of Mutation and Selection by Comparative Sequencing

   Författare :Michael C. Zody; Kerstin Lindblad-Toh; Leif Andersson; Chad Nusbaum; Henrik Kaessmann; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; chicken; chimpanzee; human; evolution; segmental duplication; structural variation; chromosomal rearrangement; comparative genomics; positive selection; selective sweep; Genetics; Genetik; Genetics; genetik;

   Sammanfattning : The process of evolution is of both scientific and medical interest. This thesis presents several studies using complete genomic reference sequences, comparative genomic data, and intraspecific diversity data to study the two key processes of evolution: mutation and selection. LÄS MER

4. 3. Exploring the diversity and evolution of giant viruses in deep sea sediments using genome-resolved metagenomics

   Författare :Disa Bäckström; Thijs J. G. Ettema; Anna J. Szekely; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Metagenomics; binning; viruses; NCLDV; Megavirales; viral evolution.;

   Sammanfattning : Viruses are the most abundant biological entities on this planet, which is impressive considering that they are completely dependent on their hosts for reproduction. Recently the idea of what viruses are has changed dramatically, with the discovery of giant viruses that belong to the Nucleocytoplasmic Large DNA Viruses (NCLDV), such as Mimiviridae, Marseilleviridae, and the proposed families Pandoraviruses, and Pithoviruses. LÄS MER

5. 4. Chromosomal β-lactamases in enterobacteria and in vivo evolution of β-lactam resistance

   Författare :Sven Bergström; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Gram negative bacteria; ß-lactamase genes; divergence of neighbouring cperons; ß-lactamase hyperproduction; evolution of control sequences;

   Sammanfattning : The ß-lactam antibiotics are the most important antibacterial agents in the treatment of infectious diseases. A severe problem in ß-lactam therapy is the emergence of ß-lactam resistant bacteria. Clinical ß-lactam resistance is most often due to the production of ß-lactamases. ß-lactamase genes reside either on plasmids or on the chromosome. LÄS MER

7. 5. Genomic Diversity and Evolution of Parasitism in Nematode-trapping Fungi

   Författare :Dag Ahrén; MEMEG; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ecology; nematode-trapping fungi; expressed sequence tags; functional genomics; bioinformatics; parasitism; Genomic diversity; Evolution; Ekologi; Microbiology; bacteriology; virology; mycology; Mikrobiologi; bakteriologi; virologi; mykologi;

   Sammanfattning : Nematode-trapping fungi are soil-living organisms that have the ability to form infection structures, traps to capture nematodes. Many nematode species are parasites on plants and animals, which have resulted in an interest to use the nematode-trapping fungi as biological control agents. LÄS MER