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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Mechanisms of the karyotype evolution in scorpions (Arachnida: Scorpiones)
 Štundlová, Jana ; Šťáhlavský, František (advisor) ; Špakulová, Marta (referee) ; Marec, František (referee)
Scorpions represent an ancient group of arachnids that have colonized a diverse range of terrestrial environments since Silurian times. Despite their long evolutionary history and ecological diversity, these animals are characterized by morphological stasis. However, the uniform morphology of extant scorpions may hide the true diversity of contemporary lineages. The study of cytogenetic traits thus has the potential to deepen our knowledge of the diversity of contemporary scorpion taxa and bring new insight into the processes underlying karyotypic changes in this group of arachnids. The subject of this thesis is to examine the diversity and dynamics of karyotypes of selected scorpion groups with holokinetic and monocentric chromosomes. Comparative cytogenetic analysis, including more than 110 species from five families, was based on standard cytogenetic techniques and mapping of the gene for 18S ribosomal RNA and telomeric (TTAGG)n repeats by fluorescence in situ hybridization (FISH). To elucidate the fundamental structural mechanisms underlying karyotype differentiation in the studied groups, the emphasis was placed on the interconnection of cytogenetic and sequence data of the analyzed species. The knowledge of the genetic structure and phylogenetic relationships of studied taxa played a crucial...
Detailed record
Mechanisms of the karyotype evolution in scorpions (Arachnida: Scorpiones)
 Štundlová, Jana ; Šťáhlavský, František (advisor) ; Špakulová, Marta (referee) ; Marec, František (referee)
Scorpions represent an ancient group of arachnids that have colonized a diverse range of terrestrial environments since Silurian times. Despite their long evolutionary history and ecological diversity, these animals are characterized by morphological stasis. However, the uniform morphology of extant scorpions may hide the true diversity of contemporary lineages. The study of cytogenetic traits thus has the potential to deepen our knowledge of the diversity of contemporary scorpion taxa and bring new insight into the processes underlying karyotypic changes in this group of arachnids. The subject of this thesis is to examine the diversity and dynamics of karyotypes of selected scorpion groups with holokinetic and monocentric chromosomes. Comparative cytogenetic analysis, including more than 110 species from five families, was based on standard cytogenetic techniques and mapping of the gene for 18S ribosomal RNA and telomeric (TTAGG)n repeats by fluorescence in situ hybridization (FISH). To elucidate the fundamental structural mechanisms underlying karyotype differentiation in the studied groups, the emphasis was placed on the interconnection of cytogenetic and sequence data of the analyzed species. The knowledge of the genetic structure and phylogenetic relationships of studied taxa played a crucial...
Detailed record

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