Discovery of the youngest sex chromosomes reveals first case of convergent co-option of ancestral autosomes in turtles

@article{Montiel2016DiscoveryOT,
  title={Discovery of the youngest sex chromosomes reveals first case of convergent co-option of ancestral autosomes in turtles},
  author={Eugenia E. Montiel and Daleen Badenhorst and Jeff Tamplin and Ronald L. Burke and Nicole Valenzuela},
  journal={Chromosoma},
  year={2016},
  volume={126},
  pages={105-113}
}
Most turtle species possess temperature-dependent sex determination (TSD), but genotypic sex determination (GSD) has evolved multiple times independently from the TSD ancestral condition. GSD in animals typically involves sex chromosomes, yet the sex chromosome system of only 9 out of 18 known GSD turtles has been characterized. Here, we combine comparative genome hybridization (CGH) and BAC clone fluorescent in situ hybridization (BAC FISH) to identify a macro-chromosome XX/XY system in the… CONTINUE READING
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