meiosis

1. Observe the meiosis on the F1 hybrid of Orychophragmus violaceus.: 观察二月兰一代杂交种子的细胞分裂。

2. Abnormality of chromosome behavior occurs from premeiotic mitosis until various stages in meiosis.: 从减数分裂前有丝分裂到减数分裂的各个阶段，染色体行为都会发生异常。

3. Radically normal meiosis occur- red in Y-PMC_s.: Y 型不育系的小孢子发生过程基本正常。

4. Here, we analyzed the function of OsSGO1 in meiosis using the RNA interference (RNAi) approach.: 本课题应用rna干扰技术分析了该基因在水稻生长发育过程中的功能。

5. Objective: to explore the mechanism leading to reduced productivity by a study of meiosis in cases of varicocele.: 目的：探讨造成精索静脉曲张患者的生育力减弱的机理。

6. The study, published in the March issue of Genes & Development, also reports the first meiosis-specific factor ever found on the X chromosome.: 刊登在3月份的“基因与发育”（Genes& Development）期刊上的一篇文章同样报道了首次发现的位于X染色体上的与减数分裂相关的因子。

7. Frequencies of bivalents in the amphidiploids tended to increase obviously in comparison with the expected chromosome pairing model of the meiosis.: 与期望染色体配对模式相比，双二倍体中二价体出现的频率有明显增大的趋势。

8. The main reason of abnormal meiosis of PMC are the complicated cytological reaction of recipient after exogenous DNA introduced into recipient chromoses.: 这些染色体异常可能是异源DNA整合到受体染色体，进行染色体重排所引起的复杂细胞学反应。

9. In order to study the general law on meiosis of Periplaneta Brunnea. Air-dried method was used to observe the chromosome of spermatogonium in different stages.: 探讨褐斑大蠊减数分裂规律，运用空气干燥法对褐斑大蠊精原细胞第一次减数分裂染色体形态进行观察。

10. Synapsis (pairing) the association of homologous chromosomes during the prophase stage of meiosis that leads to the production of a haploid number of bivalents.: 偶线期时，以同源染色体活跃的、特定的配对(联会)为特征，形成了单倍数的二价染色体。

11. Our experiments identified that miR-34c may promote meiosis process by interacting with Nanos2 leading up-regulation of Stra8 in mouse spermatogonial stem cells.: 我们的实验证实，在老鼠精原干细胞中，miR-34c通过与Nanos2+相互作用可能促进减数分裂导致 Stra8 的上调。

12. For decades, conventional wisdom stated that the X chromosome had little to do with meiosis or infertility because the X chromosome is silenced during male meiosis.: 几十年来，传统的理论认为X染色体与减数分裂以及男性不育无关，因为在男性减数分裂过程中X染色体被沉默掉了。

13. Failure has often struck at the stage of meiosis, a type of cell pision during which paired chromosomes swap DNA and the number of chromosomes per cell is halved.: 减数分裂是在配对的染色体交换DNA和细胞内染色体数目减半时的一种细胞分裂。

14. From the perspective of pragmatics, this paper analyzes the relationship among cooperative principle, politeness principle and metaphor, hyperbole, meiosis, and irony.: 本文从语用学的角度入手，分析了合作原则，礼貌原则与隐喻，夸张，弱言及反语等英语修辞格的关系。

15. It is not synchronous highly that the meiosis of pollen mother cells and the development of microspore in the same anther but different pollen sac and in the same anther chamber.: 同一花药不同花粉囊相同一药室，花粉母细胞减数分裂和小孢子的发育，并不是高度同步的。

16. After the meiosis, however, the microspores began to degenerate to become blighted and wrinkled ones, starting from the deforming of their walls and concentration of their protoplasm.: 减数分裂后，小孢子开始退化，首先是小孢子壁开始变形，随后原生质浓缩，形成干秕、皱缩的小孢子。

17. In meiosis, the pollen mother cells that abnormally acted made up about 10.28% and the male gametophytes abnormally acted at a frequency of 3.2% and mainly aborted at uninucleate stage.: 减数分裂过程中染色体行为异常的花粉母细胞约占10.28%；雄配子体发育过程中异常频率约为3.2%，败育主要发生在单核期。

18. When microspore mother cell preparing meiosis, abundant calcium precipitates appeared in cytoplasm of tapetal cells and microspore mother cells, and in callus wall surrounding the cells.: 当花粉母细胞进行减数分裂时，花药绒毡层细胞和花粉母细胞中出现了许多的细小钙颗粒。

19. The heterozygote genotypes in F2 population in this type of species are different from those in general species in which the genetic recombination occurs in meiosis of both male and female.: 这类物种的杂交F2群体中杂合子基因型的与一般物种中雌雄个体的减数分裂细胞都发生遗传重组的F2群体杂合子表型不同。

20. 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.: 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）。

21. Potassium antimonate was used to locate calcium in the fertile and sterile anther of a thermo-sensitive genie male-sterile rice at microspore mother cell meiosis stage and at early microspore stage.: 用焦锑酸盐沉淀法研究了温敏雄性核不育水稻在减数分裂时期和单核早期可育花药与不育花药的钙分布。

22. Potassium antimonate was used to locate calcium in the fertile and sterile anther of a thermo-sensitive genie male-sterile rice at microspore mother cell meiosis stage and at early microspore stage.: 用焦锑酸盐沉淀法研究了温敏雄性核不育水稻在减数分裂时期和单核早期可育花药与不育花药的钙分布。

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