X-chromosomal localization of mammalian Y-linked genes in two XO species of the Ryukyu spiny rat

  title={X-chromosomal localization of mammalian Y-linked genes in two XO species of the Ryukyu spiny rat},
  author={Yuko Arakawa and Chizuko Nishida-Umehara and Yoichi Matsuda and Shizuyo Sutou and H. Suzuki},
  journal={Cytogenetic and Genome Research},
  pages={303 - 309}
Ryukyu spiny rats (genus Tokudaia), which are endemic to the central part of the Nansei Shoto archipelago in Japan, have unique karyotypes with odd numbers of chromosomes and no cytologically recognizable Y chromosome. The chromosome numbers of Tokudaia osimensis from Amamioshima and of Tokudaia sp. from Tokunoshima are 2n = 25 and 2n = 45, respectively, with a putative single X chromosome. The mouse X probe hybridized to the unpaired X chromosome, except for the distal part of the short arm in… 

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