分裂前期

有丝分裂前期，首先是G2期凝集的染色质块逐渐解集缩成为松散状，染色质在松散的同时逐渐改组成直径为80～150nm的松散染色线结构。

In mitotic prophase , the compact lumped chromatin of G2-phase gradually decondensed into loose structure . Meanwhile , the loose chromatin gradually reorganized into the chromatin thread structure that was about 80 to 150 nm in diameter . This process was completed in about 30 min.

爱德华：你介意我看看吗？是分裂前期。

Edward : Do you mind if I look ? It 's prophase .

结果表明：分裂前期、分裂末期细胞内DNA的含量比间期细胞增加一倍；

The results showed that the intracellular DNA content at prophase or telophase was twice as much as at interphase .

Y染色体轴在减数分裂前期中有明显特征，易于与常染色体的SC区别。

The X and Y chromosome axes have a clear morphological distinction from the autosomal SC.

联会复合体（SynaptonemalComplex，SC）是真核生物减数分裂前期I同源染色体配对时形成的一种核内临时结构。

Synaptonemal complex ( SC ) is a transient structure which happened in eukaryotic nuclei during the first meiotic division when homologous chromosomes are pairing .

bFGF能明显缩短DNA合成前期（G1期）和分裂前期及分裂期（G2M期）时间；

BFGF could significantly shorten the period of pre-synthesis phase ( Phase G 1 ), prophase of division and division phase ( Phase G 2M ) .

有丝分裂前期检查点Chfr基因作用的研究进展

Advance of Study on Effects of Chfr Gene of Mitosis Prophase Checkpoint & Review

在卵母细胞减数分裂前期及中期，有一不完全配对染色体，推测为ZW染色体对，末端长的为W染色体。

At prophase and metaphase of meiosis of the oocyte , an incomplete conjugate chromosome pair may be observed , possibly the ZW complex . The longer terminal is presumed to be the W chromosome .

以表面铺展法制备棕色田鼠精母细胞联会复合体标本，经硝酸银染色作电镜观察.结果表明，在减数分裂前期IX和Y染色体的形态和行为同常染色体有明显差异；

The surface spread and silver stained preparation of spermatocytes of Microtus mandarinus have been analyzed by electron microscopy . The results show that behavior and morphology of X and Y chromosome is different from autosomal SC during prophase ⅰ of meiosis .

蒜有丝分裂前期和前中期染色体的螺旋结构

Coiling structure of prophase and prometaphase chromosomes in Allium sativum

丙酸睾酮对小鼠精母细胞减数分裂前期Ⅰ分裂象影响

Effect of testosterone propionate on spermatocyte meiosis in mice

目的探讨小鼠肌肉注射丙酸睾酮对小鼠精母细胞减数分裂前期Ⅰ分裂象的影响。

Objective To determine the effect of testosterone propionate on spermatocyte meiosis in mice .

小孢子母细胞在减数分裂前期时开始积累肼胝质壁；

At the stage of meiosis prophase , microspore mother cell begin to accumulate callose wall .

哺乳动物卵母细胞阻滞在第一次减数分裂前期的双线期。

In mammals , oocytes are arrested at the diplotene stage of the first meiotic prophase .

小麦减数分裂前期Ⅰ细胞凋亡的检测及其与细胞融合的关系

Investigation of apoptosis at the prophase ⅰ of meiosis in wheat and its relationship with cytomixis

第一次减数分裂前期的合点壁上最先出现胼胝质并显示连续的荧光。

It first appeared at the chalazal wall during the first meiotic prophase and exhibited continuous fluorescence .

其静止核和有丝分裂前期染色体分别属于复杂中央染色微粒型和中间型；

The resting nuclei and prophase chromosomes were categorized as complex chromocenter type and interstitial type respectively .

哺乳动物卵巢中的卵母细胞的发育停滞在第一次减数分裂前期的双线期。

Fully-grown mammalian oocytes are arrested at the prophase of the first meiotic division within the ovarian follicles .

黑斑蛙减数分裂前期Ⅰ的扫描电镜观察

Scanning electron microscopic observations of chromosomes of the first prophase of meiotic division in spermatocyte of Bana nigromaculatas

在减数分裂前期末所看到的交叉是在这以前发生了互换事件的细胞学证据。

The chiasmata observed during the later stages of the meiotic prophase are cytological evidence of earlier cross-over events .

为保证同源染色体的准确分离，同源染色体在减数分裂前期I通过一系列复杂的过程结合在一起形成稳定的二价体。这些复杂的前期I事件包括同源配对、联会和重组。

To ensure accurate segregation , homologous chromosomes form stable bivalents through a complex processes which include homologous pairing , synapsis and recombination .

花粉母细胞减数分裂前期Ⅰ的活性进行了电镜细胞化学定位，以研究其在次生胞间连丝和胞质通道形成中的作用。

During meiotic prophase ⅰ to elucidate its role in the biogenesis of secondary plasmodesma ( sPD ) and cytoplasmic channel ( CC ) .

联会（配对）：能产生单倍二价体的减数分裂前期，同源染色体的联合现象。

Synapsis ( pairing ) The association of homologous chromosomes during the prophase stage of meiosis that leads to the production of a haploid number of bivalents .

减数分裂前期的粗线期中，四个同源的染色单体向联系形成的结构。（遗传学）属于在成熟分裂时联在一起的一对同源染色体。

In meiosis , the association of four homologous chromatids seen during the pachytene stage of prophase . ( genetics ) used of homologous chromosomes associated in pairs in synapsis .

结果：与对照组相比，实验组小鼠胸腺淋巴细胞质内的线粒体、核糖体数量均较对照组多，处于分裂前期的细胞数目较对照组多。

Results : As compared with control , the numbers of chondriosome ribosome in thymic lymphocyte in experimental increased and the lymphocyte numbers in prophase were more than that of the control .

合子分裂前期和二细胞原胚期，核仁显著，胞质中核糖体的密度增加，出现大量多聚核糖体，细胞代谢活性较强。

Zygotes in the prophase of mitosis and two-celled proembryo became active again in metabolism , for a prominent nucleolus , high density of ribosomes and increased number of polysomes in the cytoplasm .

用电子显微镜技术观察鲻鱼早期卵子发生进入第一次成熟分裂前期联会丝复合体期、粗线期、双线期和网状期卵原细胞和初级卵母细胞生发泡和胞质的超微结构特点。

Ultrastructural characteristics of oogonia and primary oocyte in the synaptonemal complexes , pachytene , diplotene and dictyate stages of the first meiotic prophase of striped mullet in the early oogenesis were observed hr using transmission electron microscopy .

AuroraA从有丝分裂的前期到末期均定位在中心体上，对纺锤体的装配起着重要作用。

Aurora A is localized at the spindle poles from prophase to telophase and has emerged as a critical factor in the assembly of the mitotic spindle .

Nudel的256-291的这段氨基酸序列对于它定位到中心体上是必需的。AuroraA从有丝分裂的前期到末期均定位在中心体上，对纺锤体的装配起着重要作用。

The region containing residues 256-291 is essential for centrosomal localization . Aurora A is localized at the spindle poles from prophase to telophase and has emerged as a critical factor in the assembly of the mitotic spindle .

大麦减数分裂早前期诱变效应的研究

Studies on the mutagen effects of the early stage of meiosis prophase on barly