查询词典 meiotic

Since microspore mother cells showabortion during the first meiotic divison,it is suggested thatthe early male abortion is frequently associated with variousdegrees of impairment to the fertility to the female〓amate.

研究的27个杂种第一代中，有11个组合的产量超过对照或与对照持平，占总组合数的40.74%。在强优势组合中，不育细胞质带来的负效应不足以使F1产量的显著降低，而且通过杂优补偿作用可比对照有所提高。

Without conventional centrosomes, the meiotic spindle has less focused poles and is barrel-shaped.

这种不对称分裂的实现需要桶状纺锤体向卵母细胞皮质区域的迁移以及皮质区域的极化。

The mitotic error rate in cleavage stage embryos was proven to be higher than the meiotic aneuploidy rate and as a consequence, the genome of a single blastomere is not representative for the genome of the other cells of the embryo.

在卵裂期胚胎这种有丝分裂的错误率被证明是高于减数分裂的非整倍体错误率，因此，单个卵裂球的基因不能代表其他胚胎细胞的基因组。

To accomplish this, sister chromatids must segregate together during the first meiotic division , which requires that sister chromatid cohesion persists at centromeres.

实现减数分裂，姐妹染色体必须在第一次分裂联会，这过程姐妹染色体在着丝粒结合。

Meiotic pachytene bivalents were obtained from porcine testes using prolonged hypotonic treatment combined with high chloroform Carnory's fixative solution. Mitotic metaphase chromosomes were prepared from blood cell culture. Comparative studies on division index and length of pachytene bivalents and mitosis metaphase chromosomes showed that those of the former are 5 times higher and 3.42(1.87～5.98) times longer than the latter, respectively. Chromomere maps of bivalents are more abundant than mitotic metaphase G-bands, while they are correspondent with mitotic early-metaphase G-bands. The result was found by using the chromosome 12 as a sample.

以性成熟公猪睾丸和外周血为材料，采用长低渗、高氯仿卡诺固定液固定和外周血细胞培养制备减数分裂粗线期二价体和有丝分裂中期染色体，通过对二价体和有丝分裂中期染色体分裂指数和长度的比较研究，发现二价体的分裂指数和长度分别是有丝分裂中期染色体的5倍和3.42倍(1.87～5.98)；同时以12号染色体为例，比较了二价体上的染色粒结构带与有丝分裂中期染色体G-带，表明染色粒结构带比中期染色体G-带带纹丰富，而与早中期G-带带纹吻合。

Furthermore, two forms of coadaptation between sex chromosomes, the interaction between a meiotic driver and its suppressor, and dependence of a Y-like chromosome on its homologue, were also probable reasons why sexual antagonism was not observed on old Y-like chromosomes.

类似 Y 的染色体对它同源染色体的依赖性；都可能是导致性别拮抗因子在晚期观察不到的原因。

Genes important for male gametogenesis involved in highly con-served landmark events such as meiotic recombination, formation of the synaptonemal complex, sister chromatid cohesion, spermiogenesis during postmeiotic stages, and checkpoints and factors required for the meiotic cell cycle .

精子发生中的重要基因与一系列精子发生过程中阶段性的细胞事件密切相关，例如减数分裂重组、联会丝复合物的形成、姊妹染色体的结合、减数分裂后精子的变态以及减数分裂周期中的关键点和必需因子等。

The results indicated that meiotic inhibition in vitro could be used as a tool in the study of the mechanisms involved in acquisition of meiotic and embryonic competence.

因此，卵母细胞成熟的可逆性抑制可用于研究卵母细胞成熟及其胚胎发育活性的机制。

In conclusion, these results suggested that (1) the ageing-associated decline in fertility of female KM mouse was due to a decrease in both quantity and quality of oocytes;(2) the ooplasm from young mice did not correct the meiotic errors of aged mice, and the ooplasm from aged mice did not induce abnormal segregation of meiotic chromosome of young mice, indicating that meiotic anomalies found in the oocytes of aged mice might be related to nucleus or chromosomes and relevant factors;(3) a critical nucleocytoplasmic ratio was essential for normal maturation and segregation of meiotic chromosomes of oocytes and development to 2-cell embryos.

本研究结果表明：（1）昆明白小鼠与衰老相关的生育力下降是其卵母细胞数量减少和质量下降的综合结果；（2）年轻小鼠卵母细胞细胞质不能纠正老龄小鼠GV的减数分裂错误，老龄小鼠卵母细胞细胞质也不诱导年轻小鼠的GV发生减数分裂错误，老龄小鼠卵母细胞减数分裂异常很可能与细胞核或染色体及其相关因素有关；（3）关键的核质比对卵母细胞正常的成熟、减数分裂染色体分离及2-细胞期胚的发育是绝对必需的。

Interaction between MAP kinase and MPF influerlces meiotic maturation and fertilization of oocyte throughout the animal kingdom, including stimulation of germinal vesicle breakdown, suppression of DNA replication, control of meiotic chromosome segregation, maintenance of metaphase Ⅱ arrest, and resumption and completion of second meiosis.

方法分别用MAPK激酶特异性抑制剂（U0126）和MPF特异性抑制剂抑制受精卵细胞MAPK和MPF的活性，通过同位素测定MAPK和MPF的活性变化，利用显微镜进行形态观察来判定MAPK活性变化对受精卵发育的影响。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。