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

  • J. Gosalvez | jaime.gosalvez@uam.es Department of Biology, Genetics Unit, Universidad Autonoma de Madrid (UAM), Madrid, Italy.
  • F. Crespo Veterinary Services of the Spanish Army (FESCCR- Ministerio de Defensa), Avila,, Spain.
  • J.L. Vega-Pla Veterinary Services of the Spanish Army (FESCCR- Ministerio de Defensa), Avila,, Spain.
  • C. López-Fernández Department of Biology, Genetics Unit, Universidad Autonoma de Madrid (UAM), Madrid,, Spain.
  • E.I. Cortés-Gutiérrez Department of Genetics, Northwest Research Centre of Biology, Mexican National Institute for Health, Monterrey,, Mexico.
  • R. Mezzanotte Department of Biomedical Sciences and Biotechnology. Section of Genetics. Cittadella Universitaria, Monserrato, Cagliari, Italy.

Abstract

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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Published
2010-01-28
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Original Papers
Keywords:
Mammalian genome. Mammalian cytogenetics. Genome evolution. Comparative genomics.
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How to Cite
Gosalvez, J., Crespo, F., Vega-Pla, J., López-FernándezC., Cortés-GutiérrezE., & Mezzanotte, R. (2010). Shared Y chromosome repetitive DNA sequences in stallion and donkey as visualized using whole-genomic comparative hybridization. European Journal of Histochemistry, 54(1), e2. https://doi.org/10.4081/ejh.2010.e2