查询词典 x chromosome

Distorting of them by type, the rate of number aberration is 9.9%, the rate of the structure aberration is 2.3% and the abnormal rate of the chromosome polymorphism diversity is 3.5%. Distorting of them by chromosome, the rate of the euchromosome aberration is 11.7% and the rate of the sex chromosome aberration is 4.0%.

其中按畸变类型分类，数目畸变率为9.9％，结构畸变率为2.3％，染色体多态性畸变率为3.5％；按染色体不同分类，常染色体畸变率为11.7％，性染色体畸变率为4.0％。

The QTLs analysis of anther length and ratio of stigma exsertion,two key traits of classification for cultivated rice and common wild rice indicated that there are two QTLs controlling anter length located at the region of C424-G39 of Chromosome 2,and C2289-R1553 of Chromosome 5 and G1149-R1963 of Chromosome 8 respectively.

对控制花药长度和柱头外露率这两个栽培稻和野生稻的重要分类性状的QTL分析结果表明，控制花药长度的2个QTLS分别位于第2染色体C424～G39和第9染色体C2807～C1263间；控制柱头外露率的2个QTLS分别位于第5染色体R2289～R1553间和第8染色体G1149～R1963间。

With this method the homomorphic chromosome pair No.10 in Bufo bufo gargarizans could be identified as sex-specific chromosomes of the ZZ/ZW-type.The Z chromosomes in all male animals replicated synchronously,but Z chromosome and W chromosome of females revealed heteromorphic replication pattern.

用这种方法我们鉴定中华大蟾蜍蜍第10对同型染色体为ZZ/ZW型性染色体，所有雄性动物两个Z染色体的复制型是完全相同的，而雌性动物的Z和W染色体显示出异型复制型。

It was also found that the chromosomes paired well and formed a rod heteromorphic bivalent in the hybrid F1[73(36)9-1×CSDT 1BL]. Whereas 73(36)9-1 produced mainly configuration of 20''+1'+t' when test-crossed with CSDT 1BS. It showed that the translocation occurred on chromosome 1B short arm, and this segment came from rye chromosome 1RL. In the present paper we discussed also the way in which the translocation might be caused, and concluded that it was formed through reunion of two kind telocentrica (1BL and 1RL) after simultaneous misdivision of two univalent chromosomes (a wheat chromosome 1B, and a rye 1R).

同时还发现，73（36）9-1和"中国春"双端体的1BL能很好地配对并形成一个棒状的异形二价体，而它和CSDT 1BS的染色体则主要产生20+1′+t′的构型，从而证明易位发生的可能途径，推断是由于在F1花粉母细胞中的两个单价体（一个是小麦染色体1B，一个是黑麦染色体1R）同时进行错分裂之后产生的两种端着丝点染色体（1BL和1RL）重新并合形成的，因而冬小麦73（36）9-1可能是一个自发产生的易位系。

The results showed that there was difference with the cell lines in growth and size, the chromosome analysis revealed typical characterization of Lepidopteran chromosome therefore two cell lines can' t be distinguished by analysis of character of the morphology and chromosome.

二者在形态上有一定的差异，而且细胞大小不同，生长速度也有一定的差异，两株细胞系的染色体符合鳞翅目昆虫染色体的典型特征，从染色体形态和数量上不能区分两种细胞系。

As rice chromosome is very small, it is difficult to identify morphologically the individual chromosome from rice chromosome complement.

水稻染色体形体较小，很难从形态上区分各别染色体。

The results showed that the number of chromosome, which was from the cultured seedlings of meristem tip and the rank seedlings of meristem tip, was not altered, both the number were 2n=16,the hereditary stability of callus and regeneration plant was poor; and the variation percentage of chromosome in callus was 43.4%, among which haploid accounted for 6.7%, triploid accounted for 2.5%,tetraploid accounted for 10%,pentaploid accounted for 4.2%,hexaploid accounted for 3.3%,septuploid accounted for 4.2%,octoploid accounted for 3.3%,dysploid accounted for 9.2%;the chromosome variation percentage of differentiation seedlings derived from callus was11.7%,among which haploid was 6.7%,triploid accounted for 1.7%,tetraploid was 3.3%.

结果表明，茎尖分生组织培养的幼苗及丛生苗遗传稳定，其染色体未发生倍性变异，均为2n=16；愈伤组织及其再生苗遗传稳定性较差，愈伤组织染色体数变异率为43.4%，其中单倍体占6.7%、三倍体占2.5%、四倍体占10%、五倍体占4.2%、六倍体占3.3%、七倍体占4.2%、八倍体占3.3%、非整倍体占9.2%；愈伤组织分化苗染色体变异率为11.7%，其中单倍体占6.7%，三倍体占1.7%，四倍体占3.3%。

Purpuraristatus, the growth, fertility, chromosome configuration, EST isozyme etc. were analyzed in this paper. The results showed that the growth potentiality of (E. sibiricus×E. purpuraristatus) F2 and (E. purpuraristatus×E. sibiricus) F1 were much stronger than their parents, the plant height of the former was 143.2 cm. The whole plant was reseda, the latter was 129.7 cm. The spike nodding of two hybrids were in the middle of their parents, the anther was yellow; the pollen fertility was 0.02%~0.03%, seed set was 0; the average chromosome configuration of former pollen mother cell at PMC M Ⅰ was 6.90Ⅰ+14. 02Ⅱ, the latter was 7.82Ⅰ+13.59 Ⅱ, and lagging chromosome and bridge fragment were observed at meiosis anaphase Ⅰ the EST of the two hybrids F1 and their parents at tillering stage was some certain different in locus, number and intensity.

结果表明，正交F1和反交F1植株的生长势均很强，正交F1株高143.2 cm、全株浅绿色，反交F1株高129.7 cm、全株灰绿色；正、反交F1的穗型均呈双亲中间型，花药呈黄色，花粉可育率0.02%~0.03%，结实率为0，说明杂种高度不育；正交F1的花粉母细胞减数分裂中期Ⅰ平均染色体构型为6.90Ⅰ+14.02Ⅱ，反交F1为7.82Ⅰ+13.59Ⅱ，减数分裂后期丁有落后染色体和染色体桥等不规则现象；亲本及其正、反交杂种F1分某期幼叶的EST同工酶酶带的位点、数目和强弱均存在一定差异，可作为亲本及杂种在蛋白质水平识别的重要依据。

Fan YS,Davis LM,Shows TB.Mapping small DNA sequences by fluorescence in situ hybridization directly on banded metaphase chromosome.Proc Nat1 Acad Sci USA,1990,87∶6223-6227.5 Cherif D,Julier C,Delattre O,et al.Simultaneous localization of cosmids and chromosome R-banding by fluorescence microscopy:Application to regional mapping of human chromosome 11. Proc Nat1 Acad Sci USA,1990,87∶6639-6643.6 Harai M,Suto Y,Kanoh M.

我们曾经介绍过一种荧光R显带的方法［10］，在此基础上建立了一种在显带染色体上直接观察杂交信号的新的定位方法：在细胞培养时，同时加入BUdR和Hoechst33258，PI染色后即呈现清晰的荧光R带带型，用彩色和全色黑白胶卷照相均可得到满意的结果，尤其适用于国内具有一般条件的实验室。

When EMS was applied, it was found that 2.0% EMS resulted the highest microkernel rate (15.6‰). Treating the materials with 2.0% EMS for 4 hours could lead to semi-lethal. Cytological observations found that chromosome aberration phenomena such as single microkernel, double microkernel, three microkernel, chromosome bridge, resort chromosome and syncytium were presented in the mutants.

EMS诱变途径中，浓度为2.0 %处理时间为4 h的组合获得最高的微核率（15.6‰），EMS浓度为2.0 %处理时间为4 h的组合使材料达到半致死；细胞学的观察看到了单微核、双微核、三微核、染色体桥、滞留染色体和合胞体等染色体畸变现象，再生苗中发现了1棵变异株。60Co辐射的诱变途径中，20Gy的剂量使不定芽半致死，再生苗中发现了1棵变异株。

The use of the web to spread fears that flicking the switch on the LHC could create a Black Hole that could swallow up the Earth particularly concerned him, he said.

他说，使用互联网散布恐慌说启动LHC会生成一个可能吞噬地球的黑洞的做法让他感到忧虑。

Not a single word have I written down.

我一个字也没有写下来。