Additional copies of CBX2 in the genomes of males of mammals lacking SRY, the Amami spiny rat (Tokudaia osimensis) and the Tokunoshima spiny rat (Tokudaia tokunoshimensis)

@article{Kuroiwa2011AdditionalCO,
  title={Additional copies of CBX2 in the genomes of males of mammals lacking SRY, the Amami spiny rat (Tokudaia osimensis) and the Tokunoshima spiny rat (Tokudaia tokunoshimensis)},
  author={Asato Kuroiwa and Sanae Handa and Chi E. Nishiyama and Eriko Chiba and Fumio Yamada and Shintaro Abe and Yoichi Matsuda},
  journal={Chromosome Research},
  year={2011},
  volume={19},
  pages={635-644}
}
Tokudaia osimensis (the Amami spiny rat) and Tokudaia tokunoshimensis (the Tokunoshima spiny rat) have a sex chromosome composition of XO/XO, no Y chromosome. The mammalian sex-determining gene, SRY, is also absent in these species, which indicates that these spiny rats exhibit a novel sex-determining mechanism that is independent of SRY. To identify a candidate gene that controls this mechanism, the copy numbers and chromosomal locations of 10 genes with important functions in gonadal… 
Regulation of the Sox3 Gene in an X0/X0 Mammal without Sry, the Amami Spiny Rat, Tokudaia osimensis
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Sex Chromosomes and Master Sex-Determining Genes in Turtles and Other Reptiles
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CBX2 in DSD: The Quirky Kid on the Block.
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