| 黄鳝染色体Ag—NORS多态性的研究 |
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| 引用本文： | 任修海,余其兴.黄鳝染色体Ag—NORS多态性的研究[J].遗传学报,1991,18(4):304-311. |
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| 作者姓名： | 任修海 余其兴 |
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| 作者单位： | 武汉大学生物系，武汉大学生物系，武汉大学生物系 武汉 430072，武汉 430072，武汉 430072 华中师范大学生物系 |
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| 摘 要： | 采用PHA活体处理直接制片,对黄鳝染色体进行Giemsa染色、C-带及Ag-NORs等相继系列研究。结果发现,黄鳝的染色体Ag-NORs具有明显的个体特异性的数目多态、分布多态和形态多态现象。11尾被检测个体中,多态特征可分为4种类型。位于第3或第7号染色体臂内的次缢痕是Ag-NORs所在的区域,该区域分布有大量的结构异染色质,即Ag-NORs与C-带强阳性呈现严格的同步对应。本文根据实验结果,对黄鳝AS-NORs多态性的发生机制及其与结构异染色质的关系进行了探讨。
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| 关 键 词： | 黄鳝 染色体 AgNOR染色 多态性 C带 |
Polymorphisms of Silver-stained NORs in Rice-field Eels(Monopterus albus Zuiew) |
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| Ren Xiuhai Yu Qixing Wei Ping.Polymorphisms of Silver-stained NORs in Rice-field Eels(Monopterus albus Zuiew)[J].Journal of Genetics and Genomics,1991,18(4):304-311. |
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| Authors: | Ren Xiuhai Yu Qixing Wei Ping |
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| Abstract: | The results of sequential treatments for Ag-NORs polymorphisms in Monopterus albus are reported. Four types of Ag-NORs polymorphisms, varying in form, number, and location haw been detected respectively. The Ag-NORs polymorphisms were individually specific, and the distributions of Ag-NORs, secondary constrictions and positive C-bands were coincident. The mechanism of Ag-NORs polymorphisms and their relations to constrictive heterochroma-tin are discussed. |
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| Keywords: | Monopterus albus Ag-NORs C-bands Polymorphisms |
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