查询词典 diploid

Medicago truncatula has become a useful model plant for biology and genome of Legumes,since it has a small diploid genome(2×8),rapid reproductive cycle,autogamous fertilization,nitrogen-fixing,and ease of transformation.

由于蒺藜苜蓿具有高的遗传转化效率、生长期短、染色体组为2×8、基因组小、自花授粉、固氮等特点，使它成为豆科生物学和基因组学研究的模式植物。

However, analysis of DNA methylation level indicated that the total DNA methylation levels were not significantly different between diploid and autotetraploid. Autotriploid showed a trend of low DNA methylation level. It implied that the alterations of DNA methylation levels were not linear with the autopolyploidy level in watermelon.

有趣地是，二倍体与四倍体西瓜相比DNA甲基化水准却未发生大规模的调整，而三倍体西瓜显示出较为明显的低DNA甲基化水准趋势，表明西瓜同源多倍化过程中其基因组DNA甲基化水准变化与其倍性不成线性关系。

BACKGROUND: Embryonic stem cells develop from early blastular inner cell mass. Under proper condition, ESCs can maintain undifferentiated state in vitro, normal diploid nuclear type, and proliferative potential. In addition, ESCs possess multi-directional differentiation capacity and can differentiate into all sorts of cells of three germ layers.

背景：胚胎干细胞来源于发育早期囊胚的内细胞团，适当条件下能在体外维持未分化状态、正常二倍体核型及无限增殖能力，且具有多向分化潜能，能够发育分化成机体3个胚层的所有类型细胞。

The basic diploid number of chromosomes in the family Cobitidae was deemed to 2n=50. The C . sinensis with 2n=40 may originate from the ancestor of the subfamily Cobitidae. The C sinensis with 2n=90 which reserved all of 40 original chromosomes maybe result from heterologous hybridization among some fishes of the subfamily Cobitidae. The C . sinensis with 2n=76 is probably a branch of hybrid offspring.

鳅科鱼类染色体的祖先二倍数是2n=50，2n=40的中华花鳅可能是由类似于泥鳅的2n=50的鳅亚科祖先经罗伯逊易位2n=50→48→40转变而来的。2n=90的中华花鳅保留了初始的40条染色体，它可能是由2n=40的中华花鳅与同为鳅亚科的其它鱼类杂交后演化而来的。2n=76的中华花鳅并非异源三倍体，它可能是杂交后演化的一个分支。

Study on genetic characters in diploid and tetraploid of dactylis glomerata.

二倍体和四倍体野生鸭茅遗传特性比较研究。

One protein band, which was named as abalone triploid special expression protein, was found to be distinguishingly existed in one to six years old triploid abalone by PAGE analysis. While in Pacific oyster and Zhikong scallop, there is no special expressed protein could be observed among diploid, triploid or tetraploid individuals.

用常规聚丙稀酰胺凝胶电泳技术研究发现皱纹盘鲍的二倍体和三倍体个体中存在稳定的差异表达蛋白质，命名为a-TSP；在长牡蛎的2n、3n、4n之间，及栉孔扇贝的2n和3n之间未获得类似的差异表达蛋白。

Objective To observe effects of Tuber Fleeceflower Root serum on activity of SOD, the expression of c-myc mRNA and the activity of telomerase of human fetal lung diploid fibroblasts (2BS).

目的 观察含何首乌血清对人胚肺二倍体成纤维细胞（2BS）超氧化物歧化酶活性、c-myc mRNA表达及端粒活性的影响。

Objective To observe effects of Tuber Fleeceflower Root serum on activity of SOD, the expression of c-myc mRNA and the activity of telomerase of human fetal lung diploid fibroblasts (2BS).

作者：李朝敢，韦星，农嵩，韦耀东，张树球目的观察含何首乌血清对人胚肺二倍体成纤维细胞（2BS）超氧化物歧化酶活性、c-myc mRNA表达及端粒活性的影响

By using SRAP technology, a polymorphism primer of E2M5 was successfully selected. The primer E2M5 can be used to test hybrid purity of a small fruited diploid watermelon variety Hongxiaoyu.

采用SRAP技术，成功筛选出1对多态性好的引物对E2M5，对二倍体小果型西瓜品种红小玉杂交种纯度开展了分子鉴定研究。

Haploid were obtained through spore culture and spore separation text of Saccharomyces uvarum diploid M-3 that can utilize the melibiose. One haploid with good quality was screened as the parent for the hybridization.

对能利用蜜二糖的葡萄汁酵母M-3进行生孢培养和孢子分离，得到122株单倍体，经筛选后得到一株性能优良的单倍体M-3-16，作为杂交实验的亲本。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐