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Multiple sex chromosomes in the light of female meiotic drive in amniote vertebrates
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SYSNO ASEP 0434018 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Multiple sex chromosomes in the light of female meiotic drive in amniote vertebrates Author(s) Pokorná, Martina (UZFG-Y) RID, ORCID
Altmanová, M. (CZ)
Kratochvíl, L. (CZ)Source Title Chromosome Research. - : Springer - ISSN 0967-3849
Roč. 22, č. 1 (2014), s. 35-44Number of pages 10 s. Publication form Print - P Language eng - English Country NL - Netherlands Keywords amniota ; centromere ; heterogamety ; neo-sex chromosomes ; reptiles Subject RIV EG - Zoology R&D Projects GAP506/10/0718 GA ČR - Czech Science Foundation (CSF) Institutional support UZFG-Y - RVO:67985904 UT WOS 000335143600004 EID SCOPUS 84900439029 DOI 10.1007/s10577-014-9403-2 Annotation It is notable that the occurrence of multiple sex chromosomes differs significantly between major lineages of amniote vertebrates. In this respect, birds are especially conspicuous, as multiple sex chromosomes have not been observed in this lineage so far. On the other hand, in mammals, multiple sex chromosomes have evolved many times independently. We hypothesize that this contrast can be related to the different involvement of sex-specific sex chromosomes in female meiosis subjected to the female meiotic drive under male versus female heterogamety. Essentially, the male-specific Y chromosome is not involved in female meiosis and is therefore sheltered against the effects of the female meiotic drive affecting the X chromosome and autosomes. Conversely, the Z and W sex chromosomes are both present in female meiosis. Nonrandom segregation of these sex chromosomes as a consequence of their rearrangements connected with the emergence of multiple sex chromosomes would result in a biased sex ratio, which should be penalized by selection. Therefore, the emergence of multiple sex chromosomes should be less constrained in the lineages with male rather than female heterogamety. Our broader phylogenetic comparison across amniotes supports this prediction. We suggest that our results are consistent with the widespread occurrence of female meiotic drive in amniotes. Workplace Institute of Animal Physiology and Genetics Contact Jana Zásmětová, knihovna@iapg.cas.cz, Tel.: 315 639 554 Year of Publishing 2015
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