European Journal of Histochemistry (Jan 2010)

Shared Y chromosome repetitive DNA sequences in stallion and donkey as visualized using whole-genomic comparative hybridization

  • R. Mezzanotte,
  • E.I. Cortés-Gutiérrez,
  • C. López-Fernández,
  • J. Gosalvez,
  • F. Crespo,
  • J.L. Vega-Pla

DOI
https://doi.org/10.4081/ejh.2010.e3
Journal volume & issue
Vol. 54, no. 1
pp. e3 – e3

Abstract

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The genome of stallion (Spanish breed) and donkey (Spanish endemic Zamorano-Leonés) were compared using whole comparative genomic in situ hybridization (W-CGH) technique, with special reference to the variability observed in the Y chromosome. Results show that these diverging genomes still share some highly repetitive DNA families localized in pericentromeric regions and, in the particular case of the Y chromosome, a sub-family of highly repeated DNA sequences, greatly expanded in the donkey genome, accounts for a large part of the chromatin in the stallion Y chromosome.

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