| 棕色田鼠性染色体联会复合体配对的形态学研究 |
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| 引用本文： | 顾蔚 王廷正. 棕色田鼠性染色体联会复合体配对的形态学研究[J]. 兽类学报, 1999, 19(2): 150-154 |
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| 作者姓名： | 顾蔚 王廷正 |
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| 作者单位： | 陕西师范大学生命科学学院 |
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| 基金项目： | 国家“八五”科技攻关项目 |
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| 摘 要： | 以界面铺展———硝酸银染色方法制备棕色田鼠性染色体联会复合体标本，电镜观察了性染色体联会复合体的形成过程。性染色体轴深染加粗，在早粗线期开始联会；中粗线期Ｙ轴以其全长与Ｘ轴约３／８配对，Ｘ轴形成发夹状结构；晚粗线期先于常染色体解联会。并对性染色体间同源性与非同源性配对机制作了探讨
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| 关 键 词： | 棕色田鼠；联会复合体；性染色体配对 |
STUDY ON THE MORPHOLOGY OF SEX CHROMOSOMES PAIRING OF THE SYNAPTONEMAL COMPLEXES IN MANDARIN VOLE (MICROTUS MANDARINUS) |
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| GU Wei WANG Tingzheng ZHU Bicai. STUDY ON THE MORPHOLOGY OF SEX CHROMOSOMES PAIRING OF THE SYNAPTONEMAL COMPLEXES IN MANDARIN VOLE (MICROTUS MANDARINUS)[J]. Acta Theriologica Sinica, 1999, 19(2): 150-154 |
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| Authors: | GU Wei WANG Tingzheng ZHU Bicai |
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| Abstract: | Synaptonemal complexes (SC) of mandarin vole (Microtus mandarinus) have been analyzed by electron microscopy with surface spread and silver stained prepar at ion. Sex chromosome axes are deep dyed and synapsis in early pachtene. In middle pachtene the almost whole Y is fully paired with about three eighth the X and X axis forms a hairpin like fold. The disappearance of sex chromosome is foresta l led as compared with autosomal SC. Mechanism of homologous and nonhomologo us pa iring of sex chromosome has been discussed. |
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| Keywords: | Mandarin vole (Microtus mandarinus ) S ynaptonemal complex Sex chromosomes pairing |
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