减数分裂

These results indicate that TGA treatment can accelerate GVBD in Xenopus oocytes, and GVBD of mouse oocytes at low dose.

在小鼠中卵母细胞中，低剂量的TGA也可加速第1次减数分裂的启动。

2The three plants No.101-1,-2,-3 were male-sterile and gave 10 embryoes after backcrossing to B.

来自于不同亲本的染色体组在减数分裂中表现得极不同步。

Chiasmata also help to hold homologs together until the start of anaphase, thus helping to ensure the correct distribution of chromosomes into the daughter nuclei.

交叉还可以使同源染色体始终在一起直到细胞减数分裂的后期，这样确保了染色体可以正确的进入子细胞。

Theoretical investigations suggested that the major bottleneck in narrowing down the confidence interval of QTL location is the limited number of informative meioses obtainable in most mapping populations of traditional methods.

理论研究表明，传统方法中作图群体有限的有效减数分裂数是进一步缩小QTL置信区间的一个瓶颈。

Afte GVBD, the two MTOCs begin to organize the meioses spindle. The animal pole process retracted back and the polar body extruded from the site of former animal pole process.

生发泡破裂后，两个微管组织中心组织形成减数分裂纺锤体，然后第一极体以&收缩-排出&的独特方式排出。

Molecular studies have identified some genes participating in this process, including those regulating anther cell division and differentiation, controlling male meiosis, supporting pollen development, and promoting anther dehiscence.

分子生物学的研究已经发现了一些参与这一过程的基因，包括控制花粉囊组织的分化、小孢子母细胞的减数分裂、小孢子的发育和花药的开裂等。

The point of contact between paired chromatids during meiosis, resulting in a cross-shaped configuration and representing the cytological manifestation of crossing over.

染色体交叉在减数分裂过程中成对的染色体之间的接触点产生一种交叉形状的构造，代表着基因互相交换的细胞表现形式

Cytologic results showed that chromosome numbers of root cell are 2n 56, and 28 bivalents can be observed at PMC MI in the six 8x Trititrigia.

细胞学鉴定结果表明，6个八倍体小偃麦的根尖细胞染色体数目为2n=56，花粉母细胞减数分裂中期Ⅱ染色体构型为2n=28Ⅱ，具有高度的细胞学稳定性。

Its chromosome number was 42, and 21 bivalents could be observed at PMC MI. FISH analysis by using genomic DNAs from S. cereale and genomic DNAs from L.

染色体观察结果表明，山农030-1根尖染色体数目为42，花粉母细胞减数分裂中期I染色体构型为2n=21Ⅱ。

Under normal temperature (25-30℃), the process of pollen mother cell meiosis is normal; The most of chromosomes become bivalents which like "V","O","Y","X", sticks and dots, and mainly like dots,"V" and "O"; and a few of univalent (0.79% of Tainong 1 and 0 of Irwin) and multivalent (4.76% of Tainong 1 and 3.57% of Irwin) had been observed.

常温（25~30℃）条件下，花粉母细胞减数分裂过程较为正常，双线期染色体主要形成二价体，二价体构型以&V&型、&O&型、&Y&型、&X&型、点状和棒状等形式存在，并以点状、&V&型和&O&型较多见，出现少量的单价体和多价体，其中台农1号为0.79%和4.76%，Irwin为0和3.57%；同时仅在少量中期Ⅱ和后期Ⅱ花粉母细胞中观察到落后染色体。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。