染色体

Besides, terminal synapsis was observed to occur in the meiosis of spermatocytes based on the analysis of signal distribution of 5S rDNA on chromosomes obtained from testis.3. 18S rDNA and histone gene h3 were mapped to the chromosomes of C.

此外，通过对5S rDNA在精巢染色体上信号分布特征的观察，认为中国明对虾的同源染色体在第一次减数分裂中期可能发生了末端联会。3。

In P. dabryanus, the PdSox8 and PdSox9 were successfully localized in the No.4 and No.2 telocentric chromosome respectively, the relative distance to centromere is 40.2% and 67.5%; In M. anguillicaudatus, they were localized in the No.9 and No.6 telocentric chromosome respectively, the relative distance to centromere is 58.3% and 30.8%.

结果表明，在大鳞副泥鳅中PdSox8和PdSox9分别位于端部着丝粒染色体第4和第2 号即t4和t2染色体上，信号位点距着丝粒的相对距离分别为40.2%和67.5%；在泥鳅中，则分别位于t9和t6上，信息位点距着丝粒的相对距离分别为58.3%和30.8%。

The result showed that during mitotic division, the Ser-10 phosphorylated histone H3 start from the prophase and vanished at telophase, remaining mainly in the pericentromeric regions at metaphase and anaphase. During the mitosis the microtubules take on regulated change pattern.

结果显示在小麦根尖细胞有丝分裂过程中Ser10磷酸化的组蛋白H3的出现和消失与染色体的凝集和解凝集的过程存在时空上的相关性，在有丝分裂的过程中这种蛋白在着经线粒上的定位有有助于染色体向两极移动。

The result showed that during mitotic division,the Ser-10 phosphorylated histone H3 start from the prophase and vanished at telophase,remaining mainly in the pericentromeric regions at metaphase.During the mitosis the microtubules take on regulated change pattern.

结果显示在小麦根尖细胞有丝分裂过程中Ser10磷酸化的组蛋白H3的出现和消失与染色体的凝集和解凝集的过程存在时空上的相关性，在有丝分裂的过程中这种蛋白在着经线粒上的定位有有助于染色体向两极移动。

Objective :For the first time,the Karyotype and the meiosis chromosome of Testudo impressa are reported in the research.

目的：研究凹甲陆龟Testudo impressa的染色体组型及减数分裂染色体。

At this point esch chromosome consist of a pair of chromatids and the two associated chromosomes are termed a tetrad.

此时每条染色体由一对染色单体构成，这两条联合的染色体称为四分体。

With the stable genetic tetraploidy and the fertility in the nature environments, this allotetraploid population presented the key factors to form a new species with 200 chromosomes.

异源四倍体鲫鲤稳定的染色体数目和正常的性腺结构以及自然条件下的生殖传代行为，说明该异源四倍体鲫鲤已成为一个染色体数目为4n=200、遗传性状稳定的新型四倍体鱼群体，具备形成新种所需的关键因素。

With the stble genetic tetraploidy and the fertility in the nature environments, this allotetraploid population presented the key factors to form a new species with 200 chromosomes.

异源四倍体鲫鲤稳定的染色体数目和正常的性腺结构以及自然条件下的生殖传代行为，说明该异源四倍体鲫鲤已成为一个染色体数目为4n=200、遗传性状稳定的新型四倍体鱼群体，具备形成新种所需的关键因素。

We studied the optimum medium and hormone combination of callus induction from cotyledons, subculture of callus, shoot regeneration from callus, shoot-extension induction, root induction and identified the chromosome number of the plantlet. The results showed that: MS+2,4-D 2.0mg/L+KT 0.5mg/L, MS＋2,4-D 2.5mg/L＋KT 0.5mg/L, MS+2,4-D 0+KT 1.0mg/L, MS+KT 0.5 mg/L and basal MS medium. One plantlet among twenty two was determined as a tetraploidy based on the plant morphology, observation of the leaf stoma and chromosome number of the root, other two plantlets represented morphological variation.

结果表明，诱导章丘大葱子叶产生愈伤组织、愈伤组织的继代培养、愈伤组织芽分化、芽点的伸长及诱导生根的最佳培养基及激素配比分别为：MS+2，4-D 2.0mg/L+KT 0.5mg/L、MS＋2，4-D 2.5mg/L＋KT 0.5mg/L、MS+2，4-D 0+KT 1.0mg/L、MS+KT 0.5mg/L和MS基本培养基；试管苗经驯化移栽后，共有22株成活，成活率为92%，对成活的再生植株进行形态学、叶片气孔及根尖染色体鉴定表明，共有3株发生变异，其中2株为外部形态上的变异，而另一株为染色体的加倍变异。

On the basis of establishing the optimal model of military transportation routes, a genetic algorithm was designed to obtain the route with a minimum generalized weight.

在建立军事运输路径优化模型的基础上，设计了求解最小广义权路径的遗传算法；针对军事运输中的必经点和节点保序问题，构造了特殊的染色体编码规则和交叉、变异的处理方法；提出通过对初始种群染色体的预处理来提高算法的性能。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。