同源染色体配对

对F1和F2花粉母细胞（PMC）的部分同源染色体配对进行了观察。

Homologous chromosome pairing in both F_1 and F_2 PMC 's was observed .

联会复合体（SynaptonemalComplex，SC）是真核生物减数分裂前期I同源染色体配对时形成的一种核内临时结构。

Synaptonemal complex ( SC ) is a transient structure which happened in eukaryotic nuclei during the first meiotic division when homologous chromosomes are pairing .

通过染色体单体分析发现，这种部分同源染色体配对促进作用是由位于开县罗汉麦6A染色体上的基因造成的。

By monosomic analysis , the new wheat-rye paring promoter was localized on chromosome 6A .

小麦抑制部分同源染色体配对（Ph1）基因的研究

Studies on the Pairing Homoeologous ( Ph 1 ) Suppressor Gene in Common Wheat

初级精母细胞减数分裂早期同源染色体配对明显可见，并形成联会复合体。

The homologous chromosomes started pairing and forming synaptonemal complex in the primary spermatocytes .

真核生物减数分裂过程中，在同源染色体配对、联会及同源重组发生之前，染色体的端粒将附着到核膜上并暂时聚集于一处。

Prior to the pairing and recombination between homologous chromosomes during meiosis , telomeres attach to the nuclear envelope and form a transient cluster .

单体在中期Ⅰ常呈单价体，有时与具部分同源性染色体配对成三价体；

Sometimes as a trivalent combining with other chromosomes which had partial homology .

目的：通过观察小鼠精母细胞联会复合体形成过程，研究减数分裂时同源染色体的配对行为。

Objective : To study on action of homologues pairing during miosis and to observe the process of synaptonemal complex ( SC ) forming in mice spermatocytes .

在减数第一和第二次分裂中，同源染色体的配对和分离基本正常，最后形成四分体。

The pairing and segregating of homologous chromosomes at the frist and second division of meiosis were conformed with PMC meiosis , and finally , the tetrad were formation .

这意味着减数分裂中同源染色体不能配对，染色体间形成的交叉也会更少（例如，在减数分裂早期的重组位点）。

This means that homologous chromosomes failed to pair together during meiosis and chromosomes formed fewer crossovers , i.e.sites where they recombine , during the initial stages of meiosis .

联会复合体（SynaptonemalComplex，SC）是一种减数分裂特异性超分子蛋白质结构，与减数分裂Ⅰ中同源染色体的凝缩、配对、重组和分离密切相关。

Synaptonemal complex ( SC ) which is a meiosis-specific supramolecular proteinaceous structure plays a crucial role in condensation , pairing , recombination and disjunction of homologous chromosomes at meiosis ⅰ .