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Cytogenetic Analysis Did Not Reveal Differentiated Sex Chromosomes in Ten Species of Boas and Pythons (Reptilia: Serpentes)
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SYSNO ASEP 0518782 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Cytogenetic Analysis Did Not Reveal Differentiated Sex Chromosomes in Ten Species of Boas and Pythons (Reptilia: Serpentes) Author(s) Augstenová, B. (CZ)
Mazzoleni, S. (CZ)
Kostmann, A. (CZ)
Altmanová, Marie (UZFG-Y) ORCID
Frynta, D. (CZ)
Kratochvíl, L. (CZ)
Rovatsos, M. (CZ)Article number 934 Source Title Genes. - : MDPI
Roč. 10, č. 11 (2019)Number of pages 18 s. Publication form Online - E Language eng - English Country CH - Switzerland Keywords boa ; comparative genomic hybridization ; fluorescence in situ hybridization Subject RIV EB - Genetics ; Molecular Biology OECD category Genetics and heredity (medical genetics to be 3) Method of publishing Open access Institutional support UZFG-Y - RVO:67985904 UT WOS 000502296000100 EID SCOPUS 85075039202 DOI 10.3390/genes10110934 Annotation Homologous and differentiated ZZ/ZW sex chromosomes (or derived multiple neo-sex chromosomes) were often described in caenophidian snakes, but sex chromosomes were unknown until recently in non-caenophidian snakes. Previous studies revealed that two species of boas (Boa imperator, B. constrictor) and one species of python (Python bivittatus) independently evolved XX/XY sex chromosomes. In addition, heteromorphic ZZ/ZW sex chromosomes were recently revealed in the Madagascar boa (Acrantophis sp. cf. dumerili) and putatively also in the blind snake Myriopholis macrorhyncha. Since the evolution of sex chromosomes in non-caenophidian snakes seems to be more complex than previously thought, we examined ten species of pythons and boas representing the families Boidae, Calabariidae, Candoiidae, Charinidae, Pythonidae, and Sanziniidae by conventional and molecular cytogenetic methods, aiming to reveal their sex chromosomes. Our results show that all examined species do not possess sex-specific differences in their genomes detectable by the applied cytogenetic methods, indicating the presence of poorly differentiated sex chromosomes or even the absence of sex chromosomes. Interestingly, fluorescence in situ hybridization with telomeric repeats revealed extensive distribution of interstitial telomeric repeats in eight species, which are likely a consequence of intra-chromosomal rearrangements. Workplace Institute of Animal Physiology and Genetics Contact Jana Zásmětová, knihovna@iapg.cas.cz, Tel.: 315 639 554 Year of Publishing 2020 Electronic address https://www.mdpi.com/2073-4425/10/11/934
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