着丝点

By Giemsa--C technique, the chromosomes of Aegilops tauschii (85A-34) and Hordeum vulgare (H2) and Ae.tauschii- H.vulgare amphidiploid were all produced clear bands, the terminal band, centromeric band, secondary constrition band and rich intercalary bands were displayed distinctly, thus the corresponding Giemsa-C banding patterns were confirmed.

利用Giemsa--C带显带技术，节节麦、大麦、节节麦-大麦双二倍体都显示出了清晰的带纹，都具有端带、着丝点带、随体带和丰富的中间带，相应的确定了它们的Giemsa--C带核型。

The kinetochore generates the force that is essential for the complex series of chromosome movements that lead to their aligment at metaphase and segregation at anaphase.

着丝点产生对一系列复杂的染色体运动所必需的力，导致染色体中期的调整和后期的分离。

In addition, a simple and fast algorithm is proposed to perform automatic detection of the centromere and axis of chromosomes.

此外，还进行了染色体G带带纹分割图像的着丝点和染色体的自动判别研究，提出了一种简单快速的算法。

Even without any prior model about chromosome, the centromere and axis can be determined rapidly.

在未使用染色体的先验模型的情况下，这种方法能快速而且比较准确地确定染色体的着丝点和中心线。

Each chromosome consists of two chromatids held together by the centromere.

每个染色体由两个染色单体所组成，它们被一个着丝点联结在一起。

In this procedure, the chromosome 17 centromere is marked with a green florescent signal and HER-2 gene with an orange florescent signal.

在检测过程中，17号染色体的着丝点被绿色的荧光标记，her2被标记为开花状的橙色荧光。

Either of the two daughter strands of a duplicated chromosome that are joined by a single centromere and separate during cell division to become individual chromosomes.

染色单体染色体复制产生的两个单体中的一个，由细胞分裂过程中染色体在一个着丝点上分裂形成单个染色体

Histone H3 methylated at Lys4, which defines euchromatin, was not only distributed across most of the chromosomal landscape but was also present at the centromere core, the site of kinetochore assembly.

标志着常染色质的组蛋白H3－K4甲基化不仅广泛分布在大部分的染色体区域，同时也存在于着丝点的中心位置。

However, whether these bands caused by recombination were hard to perorate owing to the analysis method restriction. 2. Isozyme mean proportion of polymorphic loci and the average heterozygosities of gynogenesis population in Paralichthys ohvaceu were 6.90% and 0.03 50 respectively.

牙鲆雌核发育群体同工酶的Ldh-C，Cat两个基因座位发生了重组，基因座位与着丝点之间的重组率分别为52.6％和29.8％；雌核发育群体RAPD分析发现136 个DNA片段中有22个发生基因分离，但由于研究方法的局限，不能确定是否发生基因重组。

It was also found that the chromosomes paired well and formed a rod heteromorphic bivalent in the hybrid F1[73(36)9-1×CSDT 1BL]. Whereas 73(36)9-1 produced mainly configuration of 20''+1'+t' when test-crossed with CSDT 1BS. It showed that the translocation occurred on chromosome 1B short arm, and this segment came from rye chromosome 1RL. In the present paper we discussed also the way in which the translocation might be caused, and concluded that it was formed through reunion of two kind telocentrica (1BL and 1RL) after simultaneous misdivision of two univalent chromosomes (a wheat chromosome 1B, and a rye 1R).

同时还发现，73（36）9-1和"中国春"双端体的1BL能很好地配对并形成一个棒状的异形二价体，而它和CSDT 1BS的染色体则主要产生20+1′+t′的构型，从而证明易位发生的可能途径，推断是由于在F1花粉母细胞中的两个单价体（一个是小麦染色体1B，一个是黑麦染色体1R）同时进行错分裂之后产生的两种端着丝点染色体（1BL和1RL）重新并合形成的，因而冬小麦73（36）9-1可能是一个自发产生的易位系。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。