2008•Cytogenetics and Cell GeneticsRequires access

Nucleolus organizer regions of the canine karyotype

P. N. Howard‐Peebles, W. Mike Howell

Abstract

Silver-stained preparations of cultured lymphocytes obtained from 12 pure-bred dogs revealed the presence of nucleolus organizer regions (NORs) on four to seven chromosomes in females and five to eight chromosomes in males. All seven males had a NOR on the Y chromosome. The telomeric location of the NORs on the autosomes suggested by an earlier study was confirmed.

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Key concepts: Nucleolus organizer region, Biology, Autosome, Nucleolus, Karyotype, Genetics, Chromosome, X chromosome