四倍体的

Our study provides evidence that in human cells abscission is coordinated with the completion of chromosome segregation to protect against tetraploidization by furrow regression.

此项研究表明人体细胞的切割作用，与染色体隔离的完整性协同，保护染色体免于逆向作用导致的四倍体化。

As soybean Glycine max (Linn Merril has archean tetraploid chromosomes(2n=40) and belongs to Leguminosae, it is one of the most important resource of plant oil and protein for human beings, many scientist have attached more importance to the genetic soybean.

大豆Glycine max(LinnMerril属豆科蝶形花亚科大豆属的古四倍体(2n=40)植物，是世界上植物油和植物蛋白最重要的来源之一。因此，科学家高度重视大豆的品种改良。

Transgenic triploid fish can be produced in large scale by crossing transgenic allotetraploid fish with transgenic diploid fish.

湖南师范大学生命科学学院成功的研制了雌雄可育的异源四倍体鲫鲤，并已成为一个种群。

By using genome in situ hybridization on root somatic chromosomes of allotetraploid derived from the cross Gossypium arboreum × G.

然而，仅依据形态学和普通的核型图像，还不能确定该异源四倍体棉种中比克氏棉G染色体组在核型中的表现。

Short treatments (15–35 min after fertilization — about half the period of meiosis 1 in triploid eggs).yielded tetraploid and heptaploid cells.

因此，本试验试图利用Guo和Allen的方法对四倍体诱导中的一些基本条件进行优化。

The results showed that autote traploid rice might be effectively improved by ion beam bio-technique, from which the new germplasm with hereditable twin-embryo seedling could be selected.

结果表明，利用离子注入技术可以对同源四倍体水稻进行有效地改良，由此可以获得具有遗传变异特点的新种质，其双胚苗特性随着自交世代的推进而得到保持。

The results indicated that the highest tetraploid induction rate could reach 23.4% when the leaves precultured on the optimal organogenetic MS medium for 12d and treated with 10 mg/L colchione on the double layer media for 24h in vitro.

结果表明，预培养12d的兰考泡桐叶片在秋水仙素浓度为10mg/L的双层培养基上预培养处理24h时，四倍体诱导率最高达到23.4%。

In the present study, the autotetraploid rice IR36-4X was treated with ion implantation technique by nitrogen ion beams and a polyembryonic seedling mutant (named as the IR36-Shuang) was identified in M2 generation. The mutant line was systematically investigated about the location of seedling in polyembryonic seedling, and the cytological initiation of the additional embryo in the 1R36-Shuang was observed and determined.

以低能氮离子束为诱变源，通过对同源四倍体水稻品系&IR36-4X&进行离子注入后在其第2代群体内筛选得到了1株具有多胚苗性状特征的突变株（IR36-双），对该突变株后代的多胚苗形态特征及其多胚来源进行了研究。

For example,α2-macroglobulin appears to have an alternative structure that consists of a tetrameric subunit linked via disulfide bridges.

例如，第二号甲型巨型球蛋白似乎拥有一个由双硫键所连结的四倍体次单元所组成的结构。

Electrophoretogram patterns showed that 15 pairs of microsatellite primers reproducibly produced the well-identifiable bands.

1997从鲤中分离出来的32对微卫星DNA标记，对异源四倍体鲫鲤、红鲫和野鲤每种鱼各4尾的基因组DNA进行了研究。

We are in a real jam.

我们的麻烦大了。

Hey, it's Ahmet from India, that foreign exchange guy.

看，那是印度的阿曼特，国际交换生