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四个探针产生的家禽 DNA 指纹图谱 总被引:38,自引:1,他引:38
对四个多位点小卫星探针 33.6,33.15,α珠蛋白-3’HVR 和 M13用于家禽的DNA 指纹分析的可行性进行了探讨,较详细地报导了用不同探针在鸡、鸭、鹌鹑上产生 DNA 指纹图的方法.结果表明,用我们所采用的方法,四个探针都能在鸡、鸭、鹌鹑上产生信息量大、分辨率较高的 DNA 指纹图. 相似文献
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以一个鸡的小卫星cMS18为探针,对五指山小型猪、长白猪及枫泾猪进行了DNA指纹分析。结果表明,五指山小型猪的相似系数(0.721)显著高于长白猪(0.503)和枫泾猪(0.484),在遗传背景上也与后两者相距甚远。家系分析表明, 鸡的小卫星探针产生的猪的DNA指纹图的遗传符合孟德尔规律。
Abstract:A chicken minisatellite probe cMS18 was used to generate DNA fingerprints of Wuzhisshan microping,Landrace pig and Fengjing pig.It was revealed that similarity coefficient of Wuzhishan microping(0.721)was much higher than both that of Landrace pig(0.503)and of Fengjing pig(0.484).It was shown that Wuzhishan micropig was genetically distant to Landrace pig and Fengjing pig.Analysis of a porcine pedigree using cMS18 probe manifested that the segregation of DNA fingerprint bands was consistent with the Mendelian fashion. 相似文献
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<正>使用重组DNA技术制备特异的分子(常为DNA)探针已为医学和兽医诊断实验室提高对传染病、遗传紊乱、恶性肿瘤的诊断提供了新的强有力的工具,同时也给完成如组织分型、亲缘关系试验这类工作提供了更灵敏感更特异的方法,该技术对法医学也是很有用的(如表1)。DNA探针作为诊断试剂的应用或使实验室减少周转时间,拓宽所检测、鉴别和/或定量的试样的范围,且由于简化 相似文献
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用随机扩增多态性DNA产物做探针产生鸡的DNA指纹图 总被引:2,自引:0,他引:2
我们用12个随机扩增多态性DNA(RAPD)引物对来自不同品系的4只鸡进行了RAPD分析,在扩增出的共99条带中,表现多态性的带为38条,占总带数的38%.回收了4个表现个体特异性的RAPD产物,当用鸡的基因组总DNA探针与它们杂交时,其中3个表现阳性,说明RAPD方法扩增出的高变异产物含有重复序列.用含重复序列的个体特异性RAPD产物作探针,与无关个体鸡基因组DNA的HaeⅢ酶切产物进行DNA印迹,获得了变异性较高的DNA指纹图谱.因此,高变异的RAPD产物可以有效地用作DNA指纹探针. 相似文献
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本研究用克隆的HCMV AD169株DNA片段,制备了生物素标记的DNA探针,建立了检测临床脐带血、尿标本中HCMV DNA的核酸探针杂交方法。该探针可测出100pg同源DNA,不与人胚肺细胞、Hep-2细胞DNA以及其他疱疹病毒的DNA发生反应。用核酸杂交方法检测了30份脐带血标本,有11例阳性,阳性率为33%。10例孕妇尿标本中,3例阳性,阳性率为30%。检测结果表明:我们建立的生物素标记的HCMV DNA探针的点杂交法,具有高度的特异性、敏感性,比分离病毒法更迅速,可用于HCMV感染的临床标本的病毒核酸检测。 相似文献
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植物特异性DNA探针的制备与应用研究进展 总被引:3,自引:0,他引:3
本文简述了植物特异性DNA探针的种类,介绍了特异性探针的制备方法,主要是特异性DNA序列的分离与筛选,总结了植物特异性DNA探针在种质鉴定、外源染色体识别、核型分析和基因组研究等方面的应用,提出了存在的问题与应用前景。
Abstract:In this paper,the types of specific DNA probes from plant were briefly described,and some methods of constructing specific probes were introduced,mainly were the isolation and screening of specific DNA sequences.The applications of the specific probes in the germplasm and foreign chromosome identifications,the karyotype and genome analyses were also summarized and discussed. 相似文献
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I. Métais C. Aubry B. Hamon D. Peltier R. Jalouzot 《TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik》1998,97(1-2):232-237
We describe the cloning and the characterization of a 130-bp DNA fragment, called OPG9-130, amplified from bean (Phaseolus vulgaris L.) genomic DNA. This fragment corresponds to a minisatellite DNA sequence containing seven repeats of 15 bp which differ
slightly from each other in their sequence. Southern analysis showed that the core sequence of 15 bp is repeated in clusters
dispersed throughout the genome. The use of this fragment as a probe allowed us to identify common bean lines by their DNA
fingerprints. We suggest that OPG9-130 will be useful for line identification as well as for the analysis of genetic relatedness
between bean species and lines.
Received: 14 February 1998 / Accepted: 10 February 1998 相似文献
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The human minisatellite probes 33.6 and 33.15 cross-hybridized to DNA digests of Atlantic salmon, brown trout and rainbow trout revealing complex multi-banded patterns. These DNA fingerprints (in excess of 40 resolvable fragments in some cases) were highly polymorphic, individual specific and found to be stable, both somatically and in the germline. Pedigree analysis of an Atlantic salmon family confirmed that the minisatellite fragments showed Mendelian inheritance. With only a single occurrence of linkage and allelism being observed it is likely the minisatellite loci are widely distributed throughout the salmonid genome. The potential applications for both multi- and single locus minisatellite probes in salmonid research are discussed. 相似文献
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G. Dahle 《Journal of fish biology》1994,44(6):1089-1092
The human minisatellite probes 33.6 and 33.15 cross–hybridized to Hae III and Hinf I digested cod DNA, revealing complex fragment patterns in both Arctic and coastal cod. The DNA fingerprints were highly polymorphic, individual specific and stable in the germline. The potential applications of multi locus probes in cod research are discussed. 相似文献
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DNA指纹在近交系动物遗传污染检测中的应用 总被引:2,自引:0,他引:2
在用DNA指纹为建立葡萄胎动物模型选择动物的过程中,发现“三种”不同来源的BALB/C小鼠的DNA指纹出现了明显差别。与标准的保种品系B1和B2有12kb各缺铁了一条DNA片段,B1还缺失了6.6kb的片段,而在6kb处B1和B2都增加了一条DNA片段。 相似文献
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Germline mutation at eight minisatellite loci has been studied among the irradiated families from the Techa River population and non-exposed families from the rural area of the Chelyabinsk and Kurgan Oblasts. The groups were matched by ethnicity, parental age, occupation and smoking habit. A statistically significant 1.7-fold increase in mutation rate was found in the germline of irradiated fathers, whereas maternal germline mutation rate in the exposed families was not elevated. Most of the minisatellite loci showed an elevated paternal mutation rate in the exposed group, indicating a generalised increase in minisatellite germline mutation rate in the Techa River population. These data suggest that the elevated minisatellite mutation rate can be attributed to radioactive exposure. The spectra of paternal mutation seen in the unexposed and exposed families were indistinguishable. 相似文献
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人巨细胞病毒的分子克隆及其特异性DNA探针的制备 总被引:6,自引:0,他引:6
从人巨细胞病毒(HCMV)培养物中提取HCMV并抽提其DNA,经限制性内切酶BamHI完全消化后,与质粒pBluescript-SK重组建立了HCMV的DNA文库,从此文库。中随机筛选出两个重组质粒(pCMV-1和pCMV-2),用BamHI分析证明其中所含的病毒DNA片段的大小分别为1.0kb和7.5kb,将这两种质粒大量扩增纯化后,用光生物素进行标记作为探针,证明其只与HCMV反应,与正常人细胞DNA及Ⅰ型和Ⅱ型单纯疤疹病毒DNA无交叉反应。 相似文献
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Minisatellite DNA markers in the chicken genome 总被引:1,自引:0,他引:1
This paper reports the detailed characterization of multilocus minisatellite DNA fingerprints in the chicken. Results are presented of DNA fingerprint segregation analyses carried out in three chicken pedigrees, calculating the number of detected loci, testing for Mendelian inheritance, and cosegregation among fingerprint bands. Two pedigrees (families 1 and 2) were analysed using the Jeffreys probes 33.6 and 33.15 only, and one pedigree (family 3) was analysed using 33.6, 33.15. 3′α-globin HVR and M13 protein III gene repeat. Mean band transmission frequencies in families 1 and 2 were near to the Mendelian expectation of 0.5 and no mutations were observed. Family 3 showed transmission frequencies slightly exceeding 0.5. Linkage among bands was higher than observed in some other avian species, with each allele represented by a mean of 1.48 HaeIII fragments. Cosegregation of heterozygous parental fragments representing distinguishable loci followed the expected binomial distribution. The number of minisatellites detectable by the four probes was estimated to be 217. The pattern of cosegregation among those minisatellite loci was tested against that expected for different levels of recombination through the use of a simulation model. We conclude that most minisatellites are unlinked and probably widely dispersed in the chicken genome. 相似文献
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Qing-Hua Yuan Azusa Tanaka Richard H. Kaszynski Morio Iino Tomoko Okuno Tatsuaki Tsuruyama Toshimichi Yamamoto Alec J. Jeffreys Keiji Tamaki 《Journal of molecular evolution》2009,68(2):126-133
Lineages of structurally related alleles at minisatellite MS32 in human populations show considerable differentiation at the
continental level. However, the regional specificity of these lineages remains unknown. We now describe the comparison of
allele structures in Thai, Han Chinese, and Japanese populations with lineages previously established for North Europeans
and Africans. The great majority of alignable Asian alleles showed their closest structural relative in Asia, with few instances
of preferential alignment of Asian with European alleles and only one isolated incident showing a best match with an African
allele. Further, there was a strong tendency, most marked for Japanese, for Asian alleles to align preferentially with other
alleles from the same population, indicating strong regional specificity of allele lineages. This rapidly evolving minisatellite
can therefore serve as a lineage marker for exploring recent events in human population history and dissecting population
structure at the fine-scale level, as well as being an extremely informative DNA marker for personal identification. 相似文献