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着丝点定位
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  “着丝点定位”译为未确定词的双语例句
     An Isotetrasomic of Short Arm of Chromosome 10 in Rice and Its Application to Centromere Mapping
     水稻第十染色体短臂的等臂四体及其在着丝点定位中的应用
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     Video Text Location
     视频文本定位
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     The Orientation of Culture
     文化的定位
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     CERTROMERES AND THEIR EVOLUTION
     着丝点及其进化
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     An Isotetrasomic of Short Arm of Chromosome 10 in Rice and Its Application to Centromere Mapping
     水稻第十染色体短臂的等臂四体及其在着丝点定位中的应用
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  centromere mapping
Gene-centromere mapping by 4x-2x matings in potatoes
      
This provides a method for gene and centromere mapping.
      
Pollen markers for gene-centromere mapping in diploid potato
      
Mouse centromere mapping using oligonucleotide probes that detect variants of the minor satellite
      
Besides testing for monoluteal dispermic twins, these probabilities enable centromere mapping.
      
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he aneuploid with isochromosome or telochromosome is unique material for exploring the position of centromere in lingkage map For obtaining the aneuploid in rice,the primary trisomic from triplo-1 to triplo-12 and the aneuploid derived from a triploid of indica rice variety Zhongxian 3037 were carefully investigated from 1992~1995 From the offsprings of triplo-10,a primary trisomic of chromosome 10 of this variety,an isotetrasomic triplo-10-1 was obtainedCytological investigation revealed that a pair of...

he aneuploid with isochromosome or telochromosome is unique material for exploring the position of centromere in lingkage map For obtaining the aneuploid in rice,the primary trisomic from triplo-1 to triplo-12 and the aneuploid derived from a triploid of indica rice variety Zhongxian 3037 were carefully investigated from 1992~1995 From the offsprings of triplo-10,a primary trisomic of chromosome 10 of this variety,an isotetrasomic triplo-10-1 was obtainedCytological investigation revealed that a pair of extra isochromosomes of triplo-10-1 were derived from the short arm of chromosome 10In the offspring of this isotetrasomic,a secondary trisomic triplo-10-2 in which the extra-chromosome was an isochromosome derived from the short arm of chromosome 10 was identified With the isotetrasomic,secondary trisomic,primary trisomic and diploid of variety Zhongxian 3037,different molecular markers were used for exploring the position of centromere of chromosome 10 Based on the dosage effect revealed in the bands,it was verified that the molecular markers G1125,G333 and L169 are located in short arm,G1084 and other 16 molecular markers in long arm of chromosome 10 So the centromere of chromosome 10 is located between G1125 and G1084 consulting the RFLP linkage map given by Kurata et al8] The distance from G1125 to G1084 is about 32cM

为了确定连锁图上着丝点的位置,常常需要一些特殊的遗传材料,如端部着丝点染色体和等臂染色体材料等等。在水稻上,为了获得这类遗传材料,从中籼3037同源三倍体后代产生的非整倍体中,在筛选初级三体的同时,进行了等臂染色体变异材料的筛选。其中在三体10的后代中发现了1株形态与三体10相似的变异株,经细胞学检查,证明它是第十染色体短臂的等臂四体。利用该等臂四体及其自交后代中分离出的次级三体,以及相应染色体的初级三体和正常二倍体为材料,通过RFLP不同分子标记在这些材料上所表现剂量效应的不同,确定G1125、G333、L169等3个分子标记位于第十染色体短臂上,G1084及其它16个分子标记位于第十染色体长臂上。参照Kurata等的分子图谱,将第十染色体的着丝点定位在分子标记G1125和G1084之间,两标记相距3.2cM[8]。

 
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