High-density sex-specific linkage maps of a European tree frog (Hyla arborea) identify the sex chromosome without information on offspring sex.

Détails

ID Serval
serval:BIB_844E61F4DD48
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
High-density sex-specific linkage maps of a European tree frog (Hyla arborea) identify the sex chromosome without information on offspring sex.
Périodique
Heredity
Auteur(s)
Brelsford A., Dufresnes C., Perrin N.
ISSN
1365-2540 (Electronic)
ISSN-L
0018-067X
Statut éditorial
Publié
Date de publication
2016
Peer-reviewed
Oui
Volume
116
Numéro
2
Pages
177-181
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Résumé
Identifying homology between sex chromosomes of different species is essential to understanding the evolution of sex determination. Here, we show that the identity of a homomorphic sex chromosome pair can be established using a linkage map, without information on offspring sex. By comparing sex-specific maps of the European tree frog Hyla arborea, we find that the sex chromosome (linkage group 1) shows a threefold difference in marker number between the male and female maps. In contrast, the number of markers on each autosome is similar between the two maps. We also find strongly conserved synteny between H. arborea and Xenopus tropicalis across 200 million years of evolution, suggesting that the rate of chromosomal rearrangement in anurans is low. Finally, we show that recombination in males is greatly reduced at the centers of large chromosomes, consistent with previous cytogenetic findings. Our research shows the importance of high-density linkage maps for studies of recombination, chromosomal rearrangement and the genetic architecture of ecologically or economically important traits.
Mots-clé
Animals, Anura/genetics, Biological Evolution, Chromosome Mapping, Female, Genetic Linkage, Genotype, Male, Recombination, Genetic, Sequence Analysis, DNA, Sex Chromosomes/genetics, Synteny, Xenopus/genetics
Pubmed
Web of science
Création de la notice
29/07/2015 20:33
Dernière modification de la notice
03/03/2018 18:54
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