Isakova G K
Genetika. 1992 Aug;28(8):60-8.
Ag-NOR patterns were studied in hepatocytes from nine mink embryo siblings, including a pair of monochorionic (presumably monozygotic, MZ) twins. Both the number and the size of Ag-NORs per cell were found to be identical in MZ twins. All the other sibs had the patterns different from each other and from the MZ ones. The conclusion is that the NORs activity is a strongly inherited character and the Ag-NOR pattern can be used as a reliable genetic marker to distinguish the twin zygosity.
研究了9只水貂胚胎同胞肝细胞中的银染核仁组织区（Ag-NOR）模式，其中包括一对单绒毛膜（推测为单卵双生，MZ）双胞胎。发现MZ双胞胎中每个细胞的Ag-NOR数量和大小均相同。所有其他同胞的模式彼此不同，且与MZ双胞胎的模式不同。结论是，核仁组织区（NOR）活性是一种高度遗传的特征，Ag-NOR模式可作为区分双胎合子性的可靠遗传标记。
