Sökning: "genome stability"

Visar resultat 41 - 45 av 113 avhandlingar innehållade orden genome stability.

1. 41. Comparative Genomics of Endosymbiotic Bacteria

   Författare :Ivica Tamas; Paul Baumann; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Developmental biology; comparative genomics; endosymbiotic bacteria; Buchnera; reductive evolution; Utvecklingsbiologi; Developmental biology; Utvecklingsbiologi; molekylärbiologi; Molecular Biology;

   Sammanfattning : Genomes of intracellular bacteria are thought to be the products of reductive evolution. They have evolved from ancestral genomes of free-living bacteria through a process of massive gene loss. LÄS MER

3. 42. Transcriptional and posttranscriptional regulation of the psbA gene family in the cyanobacterium Synechocystis 6803

   Författare :Abdalla Mohamed Jama; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : Photosynthesis is the process by which photosynthetic organisms convert solar energy into chemical energy and further into carbohydrates. In plants, algae and the prokaryotic cyanobacteria the harness and conversion of sunlight takes place in specialized membranes called thylakoids. LÄS MER

4. 43. Genomic and epigenetic investigations of Silver-Russell syndrome and growth restriction

   Författare :Sara Bruce; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :;

   Sammanfattning : A combination of genes, their epigenetic regulation, and the environment control the phenotypes of an individual, such as how short or tall one grows. Epigenetics refers to chemical modifications of DNA and histones that regulate gene activity and genome stability, and can take the form of, for example, addition of a methyl group to DNA. LÄS MER

5. 44. Nucleotide Substitution Patterns in Vertebrate Genomes

   Författare :Carina Farah Mugal; Hans Ellegren; Ziheng Yang; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; nucleotide substitutions; mutation rate variation; strand asymmetries; CpG effect; GC-biased gene conversion; codon evolution; Biologi med inriktning mot molekylär evolution; Biology with specialization in Molecular Evolution;

   Sammanfattning : The rates and patterns at which nucleotide substitutions occur vary significantly across the genome sequence of vertebrates. A prominent example is the difference in the rate of evolution of functional sequences versus nonfunctional (neutrally evolving) sequences, which is explained by the influence of natural selection on functional sequences. LÄS MER

7. 45. Microbial ecology and virulence gene studies of the insect pathogen Bacillus thuringiensis

   Författare :Katarina Eskils; Malte Hermansson; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; mikrobiologi; Microbiology;

   Sammanfattning : Bacillus thuringiensis (Bt) is a spore-forming bacterium used as a bio-pesticide due to its insect toxicity. Bt was used as a model organism in a risk evaluation project. Prevalence, survival and spreading, as well as genome stability, putative virulence genes, and gene transfer were examined. Field release of a marked Bt subsp. LÄS MER