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XB-ART-32842
J Cell Biol 1975 Jan 01;641:251-4.
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Locations of 18S and 28S ribosomal genes on the chromosomes of the Indian muntjac.

Pardue ML , Hsu TC .


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The locations of genes coding for 18S and 28S ribosomal RNA have been mapped on metaphase chromosomes of the Indian muntjac M. muntjak by in situ hybridization with (3H)rRNA from the toad X. laevis. The results show that, in the muntjac, rDNA clusters are associated with the prominent secondary constrictions on the X and the Y1 chromos. In addition a cluster of rDNA is found near the tip of one arm on the longest pair of autosomes. The autosomal cluster of rDNAs usually does not express as a secondary constriction at metaphase.

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References [+] :
Caspersson, Identification of human chromosomes by DNA-binding fluorescent agents. 1970, Pubmed