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hybrid dysgenesis     
相关语句
  杂种败育
     The Hybrid Dysgenesis Cline of Drosophila melanogaster in China in the Cause of the P Family Transposable Element
     中国境内黑腹果蝇群体由于P族转座子造成的杂种败育的梯度(摘要)
短句来源
  杂种劣育
     Study on P-M of Hybrid Dysgenesis of Drosophila Melanogaster in Northwest of China
     我国西北地区黑腹果蝇P-M杂种劣育的研究
短句来源
  相似匹配句对
     Study on P-M of Hybrid Dysgenesis of Drosophila Melanogaster in Northwest of China
     我国西北地区黑腹果蝇P-M杂种劣育的研究
短句来源
     e-Hybrid Rice
     e杂交稻
短句来源
     On Hybrid Library
     论复合图书馆建设
短句来源
     The Hybrid Dysgenesis Cline of Drosophila melanogaster in China in the Cause of the P Family Transposable Element
     中国境内黑腹果蝇群体由于P族转座子造成的杂种败育的梯度(摘要)
短句来源
     Lacrimal outflow dysgenesis
     泪道发育不全
短句来源
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  hybrid dysgenesis
These lethals fall into seven functional groups, which were partially ordered by complementation with cytologically defined deficiencies of this region generated by hybrid dysgenesis.
      
Recessive lethal mutations were generated by ethyl methanesulfonate (EMS) and ethyl nitrosourea (ENU) mutagenesis and by hybrid dysgenesis (HD).
      
These lethals fall into seven functional groups, which were partially ordered by complementation with cytologically defined deficiencies of this region generated by hybrid dysgenesis.
      
Recessive lethal mutations were generated by ethyl methanesulfonate (EMS) and ethyl nitrosourea (ENU) mutagenesis and by hybrid dysgenesis (HD).
      
In one type of cross, which has strong P element activity, it was found that hybrid dysgenesis affects longevity distinctly and shortens it, especially in the F1 produced at higher developmental temperature.
      
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A mosaic female was found in the test of hybrid dysgenesis.This mosaic showed fourcharacters same as her father on the right side and same as her mother on the left side.threepoint testcross for her genotype of germ—line and examination of polytene chromosome of her progeny havebeen done and it was inferred that this mosaic might come from the development of the fertilized eggcombined with polar body.

在杂交劣生试验中,发现了一只镶嵌体雌蝇。其右侧的四个性状与父本相同而左侧的四个性状与母本相同。故对该镶体的种系基因型做了三点测交试验,并检查了她的后代的唾腺染色体。可推测,这只镶嵌体是极体与受精卵共同发育而来。

In Drosophila melanogaster the P M hybrid dysgenesis results from the interaction of two genetic components:P elements and M cytotype. Both the components of a wild population of D. melanogaster from Zhengzhou, were examined and studied in detail by genetic analysis of the GD sterility. The result shows that the population is M′ strain with defective P elements. No P elements active for potential GD sterility were revealed in all the tested males, presenting monomorphism for the P element activity. But...

In Drosophila melanogaster the P M hybrid dysgenesis results from the interaction of two genetic components:P elements and M cytotype. Both the components of a wild population of D. melanogaster from Zhengzhou, were examined and studied in detail by genetic analysis of the GD sterility. The result shows that the population is M′ strain with defective P elements. No P elements active for potential GD sterility were revealed in all the tested males, presenting monomorphism for the P element activity. But the females among and within the isofemale lines as well as in the population tested individually exhibited various abilities to repress GD sterility (0~100%), presenting clearly P M cytotype polymorphism. Here we propose a model of Q element regulation for the cytotype determing and the polymorphism forming mechanism in the M′ natural populations and isofemale lines without any intact P elements. The internal relations between distributior of P M cytotypes and the mean GD frequencies among and within the isofemale lines are discussed.

应用性腺败育频率的遗传分析方法,对郑州黑腹果蝇自然群体的P因子活性和细胞型进行了较详尽的剖析。结果发现,该群体的P因子活性是单态的;而细胞型在群体、单雌系内和个体间皆表现出多态现象;该群体为缺乏完整P因子的M′品系。提出了Q因子调控模型,以解释在缺乏完整P因子的M′品系中细胞型决定和多态现象产生的机理,并对细胞型的频率分布规律与平均GD(性腺)不育频率之间的内在联系进行了讨论。

 
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