In the platypus a meiotic chain of ten sex chromosomes shares genes with the bird Z and mammal X chromosomes

@article{Grtzner2004InTP,
  title={In the platypus a meiotic chain of ten sex chromosomes shares genes with the bird Z and mammal X chromosomes},
  author={F. Gr{\"u}tzner and W. Rens and Enkhjargal Tsend-Ayush and N. El-Mogharbel and P. O'brien and R. C. Jones and M. Ferguson-Smith and J. Graves},
  journal={Nature},
  year={2004},
  volume={432},
  pages={913-917}
}
  • F. Grützner, W. Rens, +5 authors J. Graves
  • Published 2004
  • Biology, Medicine
  • Nature
  • Two centuries after the duck-billed platypus was discovered, monotreme chromosome systems remain deeply puzzling. Karyotypes of males, or of both sexes, were claimed to contain several unpaired chromosomes (including the X chromosome) that form a multi-chromosomal chain at meiosis. Such meiotic chains exist in plants and insects but are rare in vertebrates. How the platypus chromosome system works to determine sex and produce balanced gametes has been controversial for decades. Here we… CONTINUE READING
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