Document Detail

Human chromosomal polymorphism. VII. The distribution of chromosomal Q-polymorphic bands in different human populations.
MedLine Citation:
PMID:  6862444     Owner:  NLM     Status:  MEDLINE    
The distribution of chromosomal Q-polymorphic bands was studied in different human populations. The populations studied showed no differences in the relative amount of Q bands in all the 12 polymorphic loci of seven autosomes, but interpopulation differences did exist in the absolute amount of Q bands in all the 12 potentially polymorphic loci of seven autosomes, these differences consisting of uniform increases or decreases in this absolute amount. Comparisons of the mean number of Q-heterochromatin bands with fluorescence levels 4 and 5 per individual showed a consistent prevalence of this quantitative parameter of chromosomal Q polymorphism in females as compared to males in all the national groups. It is suggested that there is some dosage compensation of chromosomal Q-heterochromatin material in females due to the absence of a chromosome in their genome, which is able to "compensate" for the large Q band in chromosome Y which is present only in the karyotype of males.
A I Ibraimov
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Human genetics     Volume:  63     ISSN:  0340-6717     ISO Abbreviation:  Hum. Genet.     Publication Date:  1983  
Date Detail:
Created Date:  1983-08-26     Completed Date:  1983-08-26     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7613873     Medline TA:  Hum Genet     Country:  GERMANY, WEST    
Other Details:
Languages:  eng     Pagination:  384-91     Citation Subset:  IM    
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MeSH Terms
African Continental Ancestry Group
Asian Continental Ancestry Group
Chromosome Mapping
European Continental Ancestry Group
Genetics, Population*
Polymorphism, Genetic*

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

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