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ZZ/ZW Sex Determination with Multiple Neo-Sex Chromosomes is Common in Madagascan Chameleons of the Genus Furcifer (Reptilia: Chamaeleonidae)
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SYSNO ASEP 0521775 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title ZZ/ZW Sex Determination with Multiple Neo-Sex Chromosomes is Common in Madagascan Chameleons of the Genus Furcifer (Reptilia: Chamaeleonidae) Author(s) Rovatsos, M. (CZ)
Altmanová, Marie (UZFG-Y) ORCID
Augstenová, B. (CZ)
Mazzoleni, S. (CZ)
Velenský, P. (CZ)
Kratochvíl, L. (CZ)Article number 1020 Source Title Genes. - : MDPI
Roč. 10, č. 12 (2019)Number of pages 14 s. Publication form Online - E Language eng - English Country CH - Switzerland Keywords comparative genome hybridization (CGH) ; evolution ; fluorescence in situ hybridization (FISH) ; heterochromatin ; karyotype Subject RIV EG - Zoology OECD category Zoology Method of publishing Open access Institutional support UZFG-Y - RVO:67985904 UT WOS 000507342400073 EID SCOPUS 85076224430 DOI 10.3390/genes10121020 Annotation Chameleons are well-known, highly distinctive lizards characterized by unique morphological and physiological traits, but their karyotypes and sex determination system have remained poorly studied. We studied karyotypes in six species of Madagascan chameleons of the genus Furcifer by classical (conventional stain, C-banding) and molecular (comparative genomic hybridization, in situ hybridization with rDNA, microsatellite, and telomeric sequences) cytogenetic approaches. In contrast to most sauropsid lineages, the chameleons of the genus Furcifer show chromosomal variability even among closely related species, with diploid chromosome numbers varying from 2n = 22 to 2n = 28. We identified female heterogamety with cytogenetically distinct Z and W sex chromosomes in all studied species. Notably, multiple neo-sex chromosomes in the form Z(1)Z(1)Z(2)Z(2) /Z(1)Z(2)W were uncovered in four species of the genus (F. bifidus, F. verrucosus, F. and previously studied F. pardalis). Phylogenetic distribution and morphology of sex chromosomes suggest that multiple sex chromosomes, which are generally very rare among vertebrates with female heterogamety, possibly evolved several times within the genus Furcifer. Although acrodontan lizards (chameleons and dragon lizards) demonstrate otherwise notable variability in sex determination, it seems that female heterogamety with differentiated sex chromosomes remained stable in the chameleons of the genus Furcifer for about 30 million years. 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/2073-4425/10/12/1020
Number of the records: 1