细胞遗传学

SYNTHESIS OF NEW SPECIES AND CYTOGENETIC STUDIES IN OLEIFEROUS BRASSICA——II.

芸苔属油菜植物的新种合成及其细胞遗传学研究——II。

The phylogenetic relationship of the two types in Sparidae are also discussed in this paper and it is believed that the two types are of divergent evolution in Sparidae .

此外，还讨论了这两种鱼的亲缘关系和鲷科鱼类中两个类群及其核型的分化问题，认为从细胞遗传学角度看，鲷科鱼类的两个类群在演化过程中是分支进化的。

Using CCA, karyotype abnormalities were found in 18 (37.5%) of 48 cases, among which complex karyotypes were found in 4 (8.3%) cases, a deletion of chromosome 5/a deletion of the long arm of chromosome 5 (-5/5q-) in 5 (10.4%) cases,-7/7q- in 5 (10.4%) cases, trisomy 8 in 8 (16.6%) cases, 20q- in 2 (4.6%) cases, unconsistent translocations in 3 (6.2%) cases.

细胞遗传学分析检出染色体异常18例(37.5%)，其中复杂异常4例(8.3%)、5号染色体缺失或5号染色体长臂部分缺失5例(10.4%)、7号染色体缺失或7号染色体长臂部分缺失5例(10.4%)、8号染色体增加8例（16.6%）、20号染色体长臂部分缺失2例（4.6%）、不一致的易位3例（6.2%）。

It was confirmed that facultative apomixes is existed in coffee species based on emasculating treatment, cyto-genetic observe and SSR marker detection.

细胞遗传学观察发现咖啡四倍体类型材料(2n=4x=44)的多胚和多胚苗中含有天然的单倍体胚和单倍体小苗(2n=2X=22)；去雄处理后，可见子房膨大，其中5份材料获得了果实和种子，初步说明无融合生殖现象的存在；对小粒种品种间杂交F1代个体的SSR分析，发现多胚苗中存在与母本图谱相同且不携带父本特异带的后代以及携带双亲特异带的有性后代，表明子代有仅来自母本的无融合生殖个体分离出来。 3 建立了咖啡无融合生殖的分子鉴别方法。

The aims of this dissertation is combining new theory and method about artificial neural network into numerical computing, cell genetics and chromosome banding technology, to solve the problem which is automatic analysis and recognition of high resolution band of plant chromosome and improve its analysis speed, quality, accuracy and automation.

本文研究的目的是将神经网络的新方法、新理论与计算数学、细胞遗传学和植物染色体分带学相互结合解决植物染色体纹理的高分辨带纹的自动分析与识别问题，提高其分析速度、质量、精度以及自动化程度。

Met hods: Immnophenotypic and cytogenetic features of blast cells in 114 a cute leukemia were analysed.

对114例急性白血病患者进行免疫表型及细胞遗传学分析。

The behavior of chromosomes at meiosis of PMC of 9 combination and selfed seed set of 16 combination of Triticum-Aegilopsamphidiploids were studied.

对小麦-山羊双二倍体9个组合的细胞遗传学和16个组合的自交结实率进行了观察。

The present paper report the karyotype of four nemerteans and nuclear DNA content s of eight nemerteans.

本文研究了4种纽虫的核型和8种纽虫的核DNA 含量，为纽形动物的细胞遗传学研究提供参考。

The fluorescence in situ hybridization technique has established itself as a powerful improvement over conventional cytogenetic techniques and is now a well-accepted procedure for chromosome analysis and aneuploidy screening.

相对于传统的细胞遗传学方法，原位杂交技术具有很大的改进，已成为一种公认的染色体分析和非整倍体筛选技术。

Bate G B,et al.Microdissection and microcloning from the short arm of human chromosome 2,Mol［J］.Cell Biol,1986,6:3826～3830.［4］ Guan X Y,et al.Chromosome microdissection identifies cryptic sites of DNA sequence amplification in human ovarian carcinoma［J］.

染色体微切割、微分离及微克隆技术在细胞遗传学和分子生物学之间架起一座新的桥梁，结合其他先进技术和方法，将加速这两门学科的更深层次的发展［33］。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。