Shared Y chromosome repetitive DNA sequences in stallion and donkey as visualized using whole-genomic comparative hybridization.
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.
Gosálvez
J
J
Department of Biology, Genetics Unit, Universidad Autonoma de Madrid, Madrid, spain. jaime.gosalvez@uam.es
Crespo
F
F
Vega-Pla
J L
JL
López-Fernández
C
C
Cortés-Gutiérrez
E I
EI
Devila-Rodriguez
M I
MI
Mezzanotte
R
R
D000818:Animals; D055028:Comparative Genomic Hybridization; D015342:DNA Probes; D018397:Equidae / Q000235:genetics*; D006736:Horses / Q000235:genetics*; D017404:In Situ Hybridization, Fluorescence; D008297:Male; D012091:Repetitive Sequences, Nucleic Acid / Q000235:genetics*; D014998:Y Chromosome / Q000235:genetics*
D015342:DNA Probes