Article
Range-wide sex-chromosome sequence similarity supports occasional XY recombination in European tree frogs (Hyla arborea).
PloS one - 1 Jan 2014
Dufresnes Christophe, Stöck Matthias, Brelsford Alan, Perrin Nicolas
Abstract excerpt
In contrast with mammals and birds, most poikilothermic vertebrates feature structurally undifferentiated sex chromosomes, which may result either from frequent turnovers, or from occasional events of XY recombination. The latter mechanism was recently suggested to be responsible for sex-chromosome homomorphy in European tree frogs (Hyla arborea). However, no single case of male recombination has been identified...
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