Počet záznamů: 1
Cretaceous park of sex determination: sex chromosomes are conserved across iguanas
- 1.
SYSNO ASEP 0434021 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Cretaceous park of sex determination: sex chromosomes are conserved across iguanas Tvůrce(i) Rovatsos, M. (CZ)
Pokorná, Martina (UZFG-Y) RID, ORCID
Altmanová, M. (CZ)
Kratochvíl, L. (CZ)Zdroj.dok. Biology Letters. - : Royal Society Publishing - ISSN 1744-9561
Roč. 10, č. 3 (2014), s. 20131093Poč.str. 4 s. Forma vydání Online - E Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova Anolis ; lizard ; male heterogamety Vědní obor RIV EG - Zoologie CEP GAP506/10/0718 GA ČR - Grantová agentura ČR Institucionální podpora UZFG-Y - RVO:67985904 UT WOS 000333902400006 EID SCOPUS 84897974902 DOI https://doi.org/10.1098/rsbl.2013.1093 Anotace Many poikilothermic vertebrate lineages, especially among amphibians and fishes, possess a rapid turnover of sex chromosomes, while in endotherms there is a notable stability of sex chromosomes. Reptiles in general exhibit variability in sex-determining systems; as typical poikilotherms, they might be expected to have a rapid turnover of sex chromosomes. However, molecular data which would enable the testing of the stability of sex chromosomes are lacking in most lineages. Here, we provide molecular evidence that sex chromosomes are highly conserved across iguanas, one of the most species-rich clade of reptiles. We demonstrate that members of the New World families Iguanidae, Tropiduridae, Leiocephalidae, Phrynosomatidae, Dactyloidae and Crotaphytidae, as well as of the family Opluridae which is restricted to Madagascar, all share homologous sex chromosomes. As our sampling represents the majority of the phylogenetic diversity of iguanas, the origin of iguana sex chromosomes can be traced back in history to the basal splitting of this group which occurred during the Cretaceous period. Iguanas thus show a stability of sex chromosomes comparable to mammals and birds and represent the group with the oldest sex chromosomes currently known among amniotic poikilothermic vertebrates. Pracoviště Ústav živočišné fyziologie a genetiky Kontakt Jana Zásmětová, knihovna@iapg.cas.cz, Tel.: 315 639 554 Rok sběru 2015
Počet záznamů: 1