A reciprocal translocation radically reshapes sex-linked inheritance in the common frog.

Détails

ID Serval
serval:BIB_B94E8A80E890
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
A reciprocal translocation radically reshapes sex-linked inheritance in the common frog.
Périodique
Molecular Ecology
Auteur(s)
Toups M.A., Rodrigues N., Perrin N., Kirkpatrick M.
ISSN
1365-294X (Electronic)
ISSN-L
0962-1083
Statut éditorial
Publié
Date de publication
04/2019
Peer-reviewed
Oui
Volume
28
Numéro
8
Pages
1877-1889
Langue
anglais
Résumé
X and Y chromosomes can diverge when rearrangements block recombination between them. Here we present the first genomic view of a reciprocal translocation that causes two physically unconnected pairs of chromosomes to be coinherited as sex chromosomes. In a population of the common frog (Rana temporaria), both pairs of X and Y chromosomes show extensive sequence differentiation, but not degeneration of the Y chromosomes. A new method based on gene trees shows both chromosomes are sex-linked. Furthermore, the gene trees from the two Y chromosomes have identical topologies, showing they have been coinherited since the reciprocal translocation occurred. Reciprocal translocations can thus reshape sex linkage on a much greater scale compared with inversions, the type of rearrangement that is much better known in sex chromosome evolution, and they can greatly amplify the power of sexually antagonistic selection to drive genomic rearrangement. Two more populations show evidence of other rearrangements, suggesting that this species has unprecedented structural polymorphism in its sex chromosomes.
Mots-clé
sex chromosome, recombination, translocation, sexual antagonism, karyotype, karyotype, recombination, sex chromosome, sexual antagonism, translocation
Pubmed
Web of science
Création de la notice
05/12/2018 11:28
Dernière modification de la notice
07/06/2019 6:26
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