Document Detail


NOR activity, heterochromatin differentiation, and the Robertsonian polymorphism in Sus scrofa L.
MedLine Citation:
PMID:  6707448     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The karyotype of the European wild pig (Sus scrofa scrofa L.) was analysed by means of silver-staining and the chromomycin A3/distamycin A/DAPI fluorescent banding technique to locate active NORs and to differentiate types of C-bands. The ribosomal RNA genes are localized at the secondary constrictions of chromosomes 8 and 10. All biarmed chromosomes, with the exception of chromosome 15/17 and the Y, had a chromomycin bright centromeric region that was moderately fluorescent with distamycin A/DAPI (DA/DAPI). Conversely, all acrocentric chromosomes and the Robertsonian fusion product (15/17) exhibited DA/DAPI bright centromeric heterochromatin. The results are compared with the chromosomal staining behavior of the domestic pig (Sus scrofa domestica L.) and discussed with respect to presumptive mechanisms of karyotypic evolution.
Authors:
B Mayr; D Schweizer; G Geber
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of heredity     Volume:  75     ISSN:  0022-1503     ISO Abbreviation:  J. Hered.     Publication Date:    1984 Jan-Feb
Date Detail:
Created Date:  1984-05-04     Completed Date:  1984-05-04     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0375373     Medline TA:  J Hered     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  79-80     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Animals
Female
Heterochromatin*
Karyotyping
Male
Nucleolus Organizer Region*
Polymorphism, Genetic*
Swine / genetics*
Chemical
Reg. No./Substance:
0/Heterochromatin

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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