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Empirical evidence for large X-effects in animals with undifferentiated sex chromosomes

SYSNO ASEP	0457559
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Empirical evidence for large X-effects in animals with undifferentiated sex chromosomes
Author(s)	Dufresnes, C. (CH) Majtyka, T. (PL) Baird, Stuart J. E. (UBO-W)_{RID, ORCID, SAI} Gerchen, J. F. (DE) Borzée, A. (KR) Savary, R. (CH) Ogielska, M. (PL) Perrin, N. (CH) Stöck, M. (DE)
Number of authors	9
Source Title	Scientific Reports. - : Nature Publishing Group - ISSN 2045-2322 Roč. 6, č. 21029 (2016), s. 21029
Number of pages	7 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	controlled study ; genetic marker ; hybrid zone ; Hyla ; introgression ; sex chromosome
Subject RIV	EB - Genetics ; Molecular Biology
Institutional support	UBO-W - RVO:68081766
UT WOS	000369938800002
EID SCOPUS	84958231482
DOI	10.1038/srep21029
Annotation	Reproductive isolation is crucial for the process of speciation to progress. Sex chromosomes have been assigned a key role in driving reproductive isolation but empirical evidence from natural population processes has been restricted to organisms with degenerated sex chromosomes such as mammals and birds. Here we report restricted introgression at sex-linked compared to autosomal markers in a hybrid zone between two incipient species of European tree frog, Hyla arborea and H. orientalis, whose homologous X and Y sex chromosomes are undifferentiated. This large X-effect cannot result from the dominance or faster-X aspects of Haldane's rule, which are specific to degenerated sex chromosomes, but rather supports a role for faster-heterogametic-sex or faster-male evolutionary processes. Our data suggest a prominent contribution of undifferentiated sex chromosomes to speciation.
Workplace	Institute of Vertebrate Biology
Contact	Hana Slabáková, slabakova@ivb.cz, Tel.: 543 422 524
Year of Publishing	2017

Number of the records: 1