Publications by authors named "V E Spangenberg"

Article Synopsis
  • - The study focuses on the diploid parthenogenetic lizard Darevskia unisexualis, which is a hybrid derived from two parental species, offering insights into sexual and asexual reproduction mechanisms.
  • - Researchers conducted a detailed analysis of the pericentromeric DNA sequences of the parental lizards, revealing unique species-specific sequences that helped create fluorescent probes to distinguish parental chromosomes in the hybrid.
  • - The team developed a computational method to find species-specific fluorescent probes for studying pericentromeres, laying the groundwork for future research on hybrids in both nature and labs.
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Despite numerous works devoted to hybrid origin of parthenogenesis in reptiles, the causes of hybridization between different species, resulting in the origin of parthenogenetic forms, remain uncertain. Recent studies demonstrate that sexual species considered parental to parthenogenetic rock lizards ( spp.) avoid interspecific mating in the secondary overlap areas.

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is the species with the largest range of snakes on Earth and one of the largest among reptiles in general. It is also the only snake species found in the Arctic Circle. is the most involved species of the genus in the process of interspecific hybridization in nature.

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The reconstruction of the evolutionary history of sex determination in squamate reptiles (lizards and snakes) is complicated by missing data in many lineages, erroneous reports, and often questionable inferences on state homology. Therefore, despite the large effort, the reconstruction of the ancestral sex determination in squamate reptiles is still controversial. With the hope to shed light on this problem, we aspired to identify the sex chromosome gene content in Dibamus deharvengi, the representative of the family Dibamidae, the putative sister clade to all other squamates.

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Although the pericentromeric regions of chromosomes that are enriched in tandemly repeated satellite DNA represent a significant part of eukaryotic genomes, they remain understudied, which is mainly due to interdisciplinary knowledge gaps. Recent studies suggest their important role in genome regulation, karyotype stability, and evolution. Thus, the idea of satellite DNA as a junk part of the genome has been refuted.

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