查询词典 chromosome

The chromosome No.1 is Very unstable, and there are three types:(1)M,M(With a double metacentric chromosomes),(2)M, T, T(With single metacentric chromosome).(3)T,T,T,T.

发现第一对常染色体极不稳定，存在(1)M，M；(2)M，T，T；(3)T，T，T，T三种多态类型。

Amblycephala is composed of 13 metacentric chromosome pairs, 9 submetacentric chro-mosome pairs and 2 subtelocentric chromosome pairs, which can be expressed as 26m + 18sm+ 4st.

随着鱼类杂交育种研究的深人，染色体的组型研究也逐渐应用于预测杂交成功与否、杂种能否正常生育等方面。

The chromosome number is 2n=96, belonging to hexaploid species (2n=6x=96), and the morphological difference is not obvious among the 96 chromosomes. All the chromosomes are metacentric and submetacentric. Relative length ratio of the longest to the shortest chromosomes is 2.10. There is no satellite chromosome in all the 96 chromosomes. The karyotype formula is 2n=96=60m+36sm, the karyotype type is 2B, a higher karyotype evolution.

结果表明，该入侵种的染色体数为2 n=96，属六倍体物种，各染色体间形态差异不明显，均为中着丝粒或近中着丝粒染色体，最长与最短染色体相对长度比为2.10，全套染色体未见随体，核型公式为2 n=96=60 m+36 sm，核型类型为进化程度较高的2B型。

The cytogenetics of interspecific hybrids among the four cultivated cotton species were studied in this paper and results are as follows: The diploid interspecific hybrid (G. arboreum×G. herbacium) F〓 had a four-chromosome-ring at the meiotic metakinesis. The synapses of tetraploid hybrid (G. hirsutum ×G. barbadense) F〓 was found to be regular, which mainly formed bivalents, sometimes some univalents, multivalents and chromosome bridge.

四个栽培棉种间杂交种F〓的细胞学观察结果表明，F〓减数分裂中期Ⅰ，形成一个环状四价体，直接证明了亚洲棉与草棉之间存在一对相互易位；F〓减数分裂中期Ⅰ联会基本正常，主要形成二价体，偶尔出现一些单价体和多价体，以及染色体桥。

The results of Fiber-FISH test in maize indicated that the hybridization signal was the extended moniliform long chain, the length of telomere DNA in each chromosome of maize was 7~103 μm and the copy numbers of the repeated sequences of telomere among each chromosome had significant differences (15~230 kb).

玉米的Fiber-FISH试验结果表明，杂交信号为伸展的念珠状长链，玉米各条染色体端粒DNA的长度为7~103μm，各染色体端粒重复序列的拷贝数存在显著差异（为15~230 kb）。

These findings convincingly confirmed that the isochromosomes 8q were monocentric chromosomes and that they were truly isochromosomes 8q rather than isodicentric chromosome (8)(p11) or a translocation between a chromosome 8 and any other chromosomes.

由此证实此核型为47，XY，-8，+i(8)(q10)×2，而非等臂双着丝粒8q或8号染色体与其它染色体易位所致。

The extensive variation in chromosome number in root tip cells of three Chinese cabbage-cabbage monosomic alien addition lines with 21 chromosomes, 6-2-4, c-2-4 and d6, was obsevered after vegetative propagation multi-generations. The chromosome number varied from 17 to more than 50. The 25S rDNA signals were very complex in the three different clones.

染色体数目为21条的3个大白菜-结球甘蓝单体异附加系6-2-4、c-2-4和d6，在无性繁殖多代后根尖细胞均出现了广泛的染色体数目变异的现象，变异范围从17条到50多条不等，25S rDNA在这些无性系的FISH杂交信号较为复杂。

Interspecies hybridization and backcrossing is a means to transfer desirable genes from one species to another in breeding programs of higher plants. Monosomic alien addition lines can be produced via addition of single chromosome of an alien donor species to the entire chromosome complement of the recipient species.

在高等植物中，以种间杂交和回交把有益基因从一个物种转移到另一个物种为目的育种项目中，单个外源染色体常常被附加到含有受体细胞完整一套染色体中，形成异源单体附加系。

The single Y chromosome of Muntiacus reevesi and Y1,Y2 ,X+4,1 chromosome of Muntiacus crinifrons were obtained by flow-sorting ,then they were amplified through DOP-PCR .

以流式细胞仪分离小麂Y染色体和黑麂Y1，Y2，X+4和1号染色体，利用DOP-PCR技术富集了分离的各单条染色体。

Curran and a team of American and Canadian researchers, in conjunction with the Philadelphia-based Radiation Therapy Oncology Group, a federally-supported clinical trials organization, found that among 289 patients with either anaplastic oligodendroglioma or anaplastic oligoastrocytoma receiving either a combination of three chemotherapy drugs with radiation or radiation alone, those whose tumors had deletions in chromosome locations 1p and 19q tended to live nearly two and a half times longer than those patients without the missing chromosome portions.

临床癌症杂志》上周报道，卡仑博士和由美国、加拿大研究人员组成的科研小组，联合了总部设在费城的由联邦政府支持的临床实验组织－美国放射肿瘤学协作组，进行了研究。289名病人患有退行性少树突神经胶质瘤或退行性少星细胞瘤，研究发现，这些病人在接受三种化疗药物结合放疗或者只接受放疗后，其中染色体缺乏1p 和19q 的病人比那些不缺乏的病人多存活了2倍半的时间。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！