查询词典 chromosomal

On the significance of chromosomal data in the evolutional study of Taxodiaceae.

标题 染色体资料在杉科演化研究中的意义。

Ansochromogenes was transformed by pUC1169 from itself. 8 mutants lost ability to produce nikkomycin were screened from 4068 colonies of Vio〓 Thio〓 with Tn4560 transposition. Southern blotting suggested that Tn4560 was inserted in at least 4 positions of chromosomal DNA in S.

于39℃，MM／Vio条件下培养携带有pUC1169的7100孢子，Tn4560发生转座；筛选到4068个转座菌落，并从中得到8株尼可霉素阻断突变株；对这8株突变株的总DNA进行Southern杂交分析表明，Tn4560至少在4个不同的位点插入到7100的染色体上。

Allelic loss at specific chromosomal loci is a common genetic alteration in human tumours and is thought to be critical for unmasking the recessive genetic changes for tumorigenesis.

人类食管癌的基因丢失研究染色体上座位特异性等位基因丢失是人类肿瘤基因组中一个普遍的遗传改变现象。

Scientists have long known that a woman\'s advancing age brings decreased fertility and increased risk of having a baby with chromosomal disorders such as Down\'s syndrome says Joshua Copel an obstetricianCgynecologist at Yale Maternal-Fetal Medicine in New Haven Conn.

科学家早就发现，女人的年龄越大，不孕不育的风险和婴儿感染染色体疾病的风险就越大，康涅狄格州纽黑文耶鲁母胎医院妇产科医生Joshua Copel说。

Scientists have long known that a woman's advancing age brings decreased fertility and increased risk of having a baby with chromosomal disorders such as Down's syndrome, says Joshua Copel, an obstetrician–gynecologist at Yale Maternal-Fetal Medicine in New Haven, Conn.

科学家早就发现，女人的年龄越大，不孕不育的风险和婴儿感染染色体疾病的风险就越大，康涅狄格州纽黑文耶鲁母胎医院妇产科医生Joshua Copel说。本新闻共4页，当前在第1页 1 2 3 4

Scientists have long known that a woman's advancing age brings decreased fertility and increased risk of having a baby with chromosomal disorders such as Down's syndrome, says Joshua Copel, an obstetrician–gynecologist at Yale Maternal-Fetal Medicine in New Haven, Conn.

科学家早就发现，女人的年龄越大，不孕不育的风险和婴儿感染染色体疾病的风险就越大，康涅狄格州纽黑文耶鲁母胎医院妇产科医生Joshua Copel说。

Scientists have long known that a woman's advancing age brings decreased fertility and increased risk of having a baby with chromosomal disorders such as Down's syndrome, says Joshua Copel, an obstetrician–gynecologist at Yale Maternal-Fetal Medicine in New Haven, Conn.6 J# O4 f7 D, Y$ u

科学家早就发现，女人的年龄越大，不孕不育的风险和婴儿感染染色体疾病的风险就越大，康涅狄格州纽黑文耶鲁母胎医院妇产科医生Joshua Copel说。

This experiment selecetd apex , flower bud and radicle of Camellia sinensis cv. Longjing 43 as research objects picked from the tea garden of Anhui Agricultural University. In this experiment ,three kinds of Chromosomal techniques were used ,including conventional sheeting method , disassociating cell wall hypoosmotic method and macrocoils method.

本试验以安徽农业大学茶园中龙井 43 的芽尖、花蕾以及其茶籽培养的幼根为研究对象，采用传统的压片法、去壁低渗法、风油精法三种制片方法，进行系统的比较和分析，这三种方法均能找到茶树体细胞有丝分裂相。

The seeds of Adzuki bean were irradiated by 60 Co γ ray of 0～700Gy.The results showed that:(1)The sub\|lethal dose(LD 50 )was 389Gy and the early seedling leaf at M\-1 showed incised,chlorotic,yellow,mosaicand curly edge.The absorbed dose was related with the rate of misshaped leaf.Chromosomal aberration, chromosome bridge and fragment of M\-1 in the tip were observed.If the seed was irradiated with 400Gy,the rate of abnormal cell at the root was more than 10%.The relationship between pollen fertility and irradiation dose was negative correlated.

本试验研究结果表明：60 Coγ射线辐照小豆种子的半致死剂量平均为 3 89Gy ，且M1生长初期叶片性状有明显的叶面缺刻、叶色缺绿、叶形不对称、叶缘卷曲、花叶、黄叶等致变现象，各种畸型叶出现频率与辐照剂量大小有关；M1根尖细胞中有多种染色体畸变类型，以染色体桥和断片频率较高，辐照剂量在 40 0Gy以上时根尖细胞异常率达 1 0 %以上；植株花粉育性与辐照剂量呈极显著负相关，京农 2号植株花粉育性达 5 0 %时的辐照剂量为 3 78Gy。

This P element then transposes from the plasmid to a random chromosomal site.

携带目的基因的P因子可从质粒转座到任意染色体上。

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