湖红点鲑（Salvelinus namaycush）双CMA3染色体的分子细胞遗传学分析
Molecular cytogenetic analysis of the double-CMA3 chromosome of lake trout, Salvelinus namaycush.
作者信息
Reed K M, Phillips R B
机构信息
Department of Biological Sciences, University of Wisconsin-Milwaukee 53201, USA.
出版信息
Cytogenet Cell Genet. 1995;70(1-2):104-7. doi: 10.1159/000134002.
PMID:7537646
Abstract
The chromosome possessing two chromomycin A3 (CMA3) staining sites in lake trout (Salvelinus namaycush) was examined using FISH. All CMA3-bands in the karyotype contained ribosomal DNA (rDNA), including both sites on the double-CMA3 chromosome. One rDNA site on this chromosome was bordered by telomeric repeats, implicating a rearrangement in the origin of the second NOR.
摘要
利用荧光原位杂交技术（FISH）对湖红点鲑（Salvelinus namaycush）中拥有两个放线菌素A3（CMA3）染色位点的染色体进行了检测。核型中的所有CMA3带均包含核糖体DNA（rDNA），包括双CMA3染色体上的两个位点。该染色体上的一个rDNA位点由端粒重复序列界定，这意味着第二个核仁组织区（NOR）的起源发生了重排。
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