染色体

From the above, the sex determination type is XY, but sex chromosome of male is XXY.

由此看出葎草的性别决定方式是XY型，但雄株的性染色体为三条即XXY，性染色体为最大染色体。

And the research materials were often meiotic pachytene chromosomes of sex gland and mitotic prometaphase of early embryos and diapause eggs\' somatic cells.

早期，家蚕染色体识别和基因定位研究主要利用性腺减数分裂粗线期的染色体、早期胚胎和滞育卵有丝分裂早中期的染色体作为材料，按照相对长度和部分限性易位系统或缺失等来进行核型分析。

Of human cancers in our country, yet little is known about the molecular changes in this often disfiguring and fatal disease. The disease is characterized by a relatively poor prognosis and the treatment is generally followed by severe dysfunction. Few protooncogenes and tumor suppresser genes have been found to be altered in laryngeal carcinoma.

与其他肿瘤一样，喉癌细胞的染色体也存在数目异常和结构畸变，而几个特定的染色体区段不同长度的缺失是喉癌染色体结构畸变较突出的特征，这为在分子遗传学水平揭示喉癌的发生机制提供了充分的理论依据。

Genetics used of a chromosome that is not paired or united with its homologous chromosome during synapsis.

属于一种染色体的，在染色体结合过程中不与它的对等染色体配对或结合的。

The first stage of meiosis, constituted by a series of events that include DNA replication, the synapsis of homologous chromosomes, crossing over, the formation of chiasmata, and contraction of the chromosomes.

前期阶减数分裂的第一个阶段，由一系列的事件组成，包括脱氧核糖核酸的复制，同种染色体结合、交叉，染色体形成以及染色体的收缩一套，一系列

The first stage of meiosis ,constituted by a series of events that include DNA replication,the synapsis of homologous chromosomes,crossing over,the formation of chiasmata,and contraction of the chromosomes.

前期阶减数分裂的第一个阶段，由一系列的事件组成，包括脱氧核糖核酸的复制，同种染色体结合、交叉，染色体形成以及染色体的收缩

DNA'.'' replication, the synapsis of homologous chromosomes, crossing over, the formation of chiasmata, and contraction of the chromosomes.

复制'。''，同种染色体结合、交叉，染色体形成以及染色体的收缩

When EMS was applied, it was found that 2.0% EMS resulted the highest microkernel rate (15.6‰). Treating the materials with 2.0% EMS for 4 hours could lead to semi-lethal. Cytological observations found that chromosome aberration phenomena such as single microkernel, double microkernel, three microkernel, chromosome bridge, resort chromosome and syncytium were presented in the mutants.

EMS诱变途径中，浓度为2.0 %处理时间为4 h的组合获得最高的微核率（15.6‰），EMS浓度为2.0 %处理时间为4 h的组合使材料达到半致死；细胞学的观察看到了单微核、双微核、三微核、染色体桥、滞留染色体和合胞体等染色体畸变现象，再生苗中发现了1棵变异株。60Co辐射的诱变途径中，20Gy的剂量使不定芽半致死，再生苗中发现了1棵变异株。

In all 6 species, 5S rDNA was located at the paracentromeric region of a pair of middle-sized telocentric chromosome.

结果表明5S rDNA在6种石斑鱼染色体组中，均位于1对中等大小端部着丝粒染色体且靠近着丝点的位置上，种间和种内未观察到差异，在染色体上的分布模式基本一致。

Its chromosome number was estimated at 2n = 48; which consisted of 8 submetacentric and 40 telocentric chromosomes. The karyotype formula was described as 8 sm + 40 t with 56 fundamental arms.

计算其染色体数，结果为2n＝48，其中8条为近中央中结染色体及40条为端点中结染色体，核型公式为8 sm+40 t，染色体总臂数为56。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐