减数的

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。

Mammalian Spermatogenesis is a unique cell differentiation process and can bedivided into three stages: mitosis, meiosis, and spermiogenesis.

哺乳动物的精子发生是一个复杂的细胞分化过程，可分为有丝分裂期、减数分裂期和精子形成期三个阶段。

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

联会：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。

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 conclusion, abnormal meiosis of PM-Cs is the cytogenetic causes for fertility reduction of tetraploid melon.

花粉母细胞减数分裂的异常是同源四倍体甜瓜育性低的细胞学原因。

The result showed that the plant of Maicao No. 9 was tall, with good fecundity, fully filled grain and vigorous growth. The chromosome number of the root cells was 2n=56, through the observation of pollen mother cells meiosis, there were a certain amount of univalents, ring bivalents and bar bivalents in PMCM. Different numbers of lagging chromosomes, chromosome bridges and micronucleus were found in anaphaseⅠ, anaphaseⅡ and tetraspore.

结果表明：麦草9号植株高大，结实性较好，籽粒饱满，生长旺盛；根尖细胞染色体数目为2n=56，对其进行花粉母细胞减数分裂观察，中期Ⅰ具有一定数量的单价体、环状二价体、棒状二价体；后期Ⅰ、后期Ⅱ与四分体时期都出现不同数量的落后染色体、染色体桥、微核等现象。

We think that centrin play an important role in meiosis during Urechis unicinctus sperm metamorphosis difference and we also think that centrin may be related to trochophore cilia and sperm tail formation,and reconstraction of centrosome after fertilization.

我们推测Centrin在单环刺螠精子发生过程中减数分裂或精子细胞变态分化过程中发挥作用；在单环刺螠早期胚胎发育中，Centrin可能与受精后中心体的重建及担轮幼虫的纤毛形成有关。

The system was able to help androgone in testis tissue go through meiosis in vitro without addition of testos-terone by providing necessary conditions for differentiation of androgone.Key words: testis;tissue culture;in vitro spermatogenesis;transmission electron microscopy;HE staining

证实，在没有添加睾酮的情况下，此培养体系能够提供睾丸组织块生精细胞分化所需要的条件，使非精子细胞类生精细胞减数分裂为精子细胞。

Compensatory hypertrophy is a different temporary growth response in which residual tissue increases in mass and cell number: cells undergo mitosis but do not dedifferentiate.

代偿式肥大是一个不同的，暂时的生长应答过程，残余组织在体积和细胞数量上增加：细胞经历了减数分裂，但没有去分化过程。

In the studies on transferring and identifying alien chro-mosomes into wheat,the combined use of mitotic and meioticchromosome N-banding is also successfully practiced in deter-mination of T.durum-H.villosa amphipoid,five wheatalien disomic additions with H.villosa chromosomes,〓〓,alien sulstitution line with chromosome 〓 andsome translocation lines.

在外源染色体导入、鉴定研究中，利用根尖有丝分裂中期染色体和花粉母细胞减数分裂中期Ⅰ染色体的N-分带，快速、准确地鉴定了硬粒小麦一簇毛麦双二倍体、普通小麦一簇毛麦异耐加系V〓、V〓、V〓、V〓和V〓，普通小麦一簇毛麦异代换系V〓以及一些具有易位的杂种后代。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。