花背蟾蜍的核型分析 Ⅱ.银染核仁组成区在数目上的多态及其在剂量上的补偿效应

被引：11

作者：

尚克刚

李士鹏

金昊

机构：

[1] 北京大学生物学系

[2] 发育生物学研究所

[3] 中国科学院遗传研究所

来源：

遗传学报 | 1984年 / 01期

关键词：

染色体; 花背; Ag; 短臂; 核型分析; NOR; 补偿效应;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Ag-NOR的数目、位置和大小在个体间表现出复杂的多态现象。主要的NOR位于第4染色体上,但也几乎可以出现在所有的其它染色体上。当一个NOR足够强大时,该细胞只显示出一个NOR,而当主要的NOR由于某种原因发生缺失时,本来不活动的潜在的NOR则处于活动状态。

引用

页码：52 / 60+83 +83-84

页数：11

共 11 条

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