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遗传现象     
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  genetic phenomenon
     We stated the influence of Callipyge gene on sheep carcass quality and chemical composition and explained the special genetic phenomenon of Callipyge gene.
     综述了引起绵羊表现双肌臀性状的Callipyge基因对绵羊胴体品质及化学成分等的影响,并着重对Callipyge基因的特殊遗传现象进行了解释。
短句来源
     The rate of healthy and diseased in F2 approached 15 to 1. The authors explain this genetic phenomenon with the rule of free combination and multiple action principle of Mendel.
     其第二代发病率为6.2%,即F_2健康后裔与患畜的比数接近15:1,作者用孟德尔自由组合规律和重叠作用原理解释了这一遗传现象
短句来源
     Results showed that the polymorphisms of serum Pa, Tf, Cp and Am in Chinese native pig breeds were determined by 2, 3, 3 and 4 co-dominant alleles and exhibited 3, 6, 4 and 7 phenotypes, respectively. The genetic phenomenon of 4serum proteins are in agreement with Mendelian inheritance.
     结果表明:在我国部分猪种中四个蛋白位点均表现出多态型,Pa、Tf、Cp和Am分别受2,3,3和4个共显性等位基因所控制,并呈现出3,6,4和7种基因型,其遗传现象符合孟德尔遗传规律。
短句来源
     Genomic imprinting is a new genetic phenomenon that differs from the classical Mendel genetic law, the imprinted genes always express monoallelically.
     基因组印记(genomic imprinting)是一种完全不同于经典孟德尔遗传规律的遗传现象,通常以单等位基因表达的模式进行遗传。
短句来源
     Early generation stability is a special genetic phenomenon in rice breeding practice.
     水稻早世代稳定现象是水稻育种实践中出现的一种特殊遗传现象
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  genetic phenomena
     The results showed that the haplotypes of individual sperm can be unequivocally demonstrated by these methods. The application of single sperm typing provides a unique tool for the construction of high resolution genetic map and the study of genetic phenomena requiring large sample size.
     结果表明,上述技术的应用可以清晰地鉴定出每个精子的单倍型,单精子分型技术的应用为猪高精度遗传作图及需要样本量足够大的遗传现象研究提供了独特的工具。
短句来源
     Hereon we provide a new five degree chromosome model—YR-cohesion chromosome model which will give a better answer to the questions above,as well as polytene chromosome,puff,and lampbrush chromosome and many other genetic phenomena
     在此,我们给出一个新的五级染色体模型 :YR -黏和染色体模型。 它不仅能解释以上问题 ,同时能解释多线染色体、灯刷染色体以及一些经典遗传现象
短句来源
     Human has gone through a long cognitive processing from genetic phenomena to genetic factor, from genetic factor to gene, and from gene structure to gene function during the developed process of life science.
     关于生命科学的发展,从遗传现象到遗传因子,从遗传因子到基因,从基因结构到基因功能,人类经历了一个漫长的认识过程。
短句来源
  heredity phenomenon
     Heredity Phenomenon of Prior Austenite Grain Boundary in 20Cr2Ni4A Steel
     20Cr2Ni4A钢中奥氏体晶界遗传现象
短句来源
     HEREDITY PHENOMENON OF PRIOR AUSTENITE GRAIN BOUNDARY IN STEEL
     钢中奥氏体旧晶界遗传现象
短句来源
     The effect of heredity phenomenon on the structure properties of ZL201 alloys is investigated by floating casting.
     采用悬浮浇注法研究了ZL201合金的遗传现象及其组织性能的影响。
短句来源
     The experimental results show that if original strutcure is non—equilibrium, the heredity phenomenon of structure will occur at the rapid and slow heating rate, as a result, the impact hardness at value is low.
     试验结果表明:原始组织为非平衡组织时,快速(高频)和慢速(1—2℃/min)加热到临界点Ac_1以上均出现组织遗传现象,其冲击韧性ak值较低。
短句来源
     The experimental results show that prior structure being the Martensite of nonequilibrium structure, at both rapid and slow rate heating, the heredity phenomenon of structure occures, as a result, the impact ductility a_k value is Lower. Although me allographic structure, hea ed at moderate rate, is fine fracture is s(?)
     实验结果表明,原始组织为非平衡组织马氏体时,快速和慢速加热均出现组织遗传现象,冲击韧性a_k值较低,中速加热金相组织虽细化,但断口仍是粗大的,发生了断口遗传,a_k值较低。
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  inheritance phenomenon
     The inheritance phenomenon of precipitated V_4C_3 in martensitic transformation has been investigated by means of electron diffraction and matrix analysis.
     本文利用电子衍射和矩阵分析方法探讨了析出V_4C_3在马氏体相变中的遗传现象
短句来源
     In this paper,the prior coarse austenite grain boundary inheritance,the effect of thermal deformation on austenite grain boundary inheritance,the effect of austenite grain boundary inheritance on mechanical properties of steel 20Cr2Ni4A are investigated The results show that there is typical austenite grain boundary inheritance phenomenon in this steel.
     作者用20Cr2Ni4A钢研究了晶界遗传现象和本质、再次处理前的热变形对晶界遗传的影响以及晶界遗传对力学性能的影响。
短句来源
     It was temperarily here defined as epistatic inhibition hypothesis interpreting its fertility inheritance phenomenon. 
     二是由性质相同、作用相反且可育基因起上位作用的两对育性基因彼此互作产生抑制效应,权称之为上位抑制假说解释其育性遗传现象
短句来源
     This paper studies the inheritance phenomenon of coarse martensitic stainless steel 2Cr 13 used for stage turbine blade, which are obtained after afresh heating. During austenitizing, the kinetics of isothermal transformation and structure are investigated.
     本文对汽轮机末级叶片钢2Cr13粗晶马氏体在重新加热淬火后的粗晶遗传现象进行了研究,观察了在奥氏体化时恒温形成的动力学和组织结构。
短句来源
     This paper shows that inheritance phenomenon of coarse austenite grains are due to the boundary segregation of carbide along the prior austenite grain boundary.
     研究表明,调质后粗晶奥氏体的遗传现象,是由于沿原奥氏体晶界碳化物偏聚析出的结果。
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      genetic phenomenon
    coli cells we have described in 2005 a new fundamental genetic phenomenon, namely quasi-adaptive response to alkylating compounds, "quasi-Ada".
          
    This is a visible counterpart of the genetic phenomenon of dosage compensation.
          
    The elimination of chromatin or whole chromosomes from the future somatic nuclei during germ line-soma differentiation in early embryogenesis is a genetic phenomenon found in a wide variety of animal species.
          
    However, further study is needed to confirm whether the abnormality induced by nickel (branch formation) is a physiological or genetic phenomenon.
          
    Mitotic recombination, another genetic phenomenon, has also been studied for DREs.
          
    更多          
      genetic phenomena
    Unusual genetic phenomena associated with Tn5 mutagenesis in Alcaligenes eutrophus strain H1
          
    However, segregation may be distorted by physiological as well as genetic phenomena, i.e., cross-feeding, syntrophic growth, allele viability, clonal effects, or parental genome segregation.
          
    Somatic DNA variation represents one of the most interesting but also one of the least investigated genetic phenomena.
          
    The discovery of point mutations, large-scale mtDNA deletions, duplications, and autosomally inherited disorders with multiple mtDNA deletions have revealed new genetic phenomena.
          
    There is sufficiently good agreement to support the hypothesis ofRenner that there is a correlation between the developmental processes in the megaspore tetrad and the genetic phenomena of competition in the haplophase.
          
    更多          
      其他


    Experiments indicated that early maturity of wheat belongs to quantitative characters. The heading stage of F1 is intermediate with the tendency to early parents and with the heterosis average of -14.2% in the crosses of parents with different growth and development periods. The heading stage of F2 shows continuous variation and transgressive inheritance. The heritability of heading stage is remarkable, and has an average of 63.76%. There is a significant correlation between the average values of heading stages...

    Experiments indicated that early maturity of wheat belongs to quantitative characters. The heading stage of F1 is intermediate with the tendency to early parents and with the heterosis average of -14.2% in the crosses of parents with different growth and development periods. The heading stage of F2 shows continuous variation and transgressive inheritance. The heritability of heading stage is remarkable, and has an average of 63.76%. There is a significant correlation between the average values of heading stages of F1 and those of parents (γ = 0.767, regression coefficient = 0.715). The parents with differents growth and development periods have a remarkable influence on the progenies of hybrids. The general combinations of crosses have a greater effect for "early parents", however, to the constrictional effect of "late parents" attention should also be paid and to be neglected. The inheritance transmissions of early maturity are different with different parents. Attention should be paid to selections of early parents in breeding work. According to the law of inheritance of early maturity, most "early varieties" may be selected from "early parents" and "early varieties" may be selected from "late parents". The selection of early type in early generation of hybrids is effective.

    通过试验说明,小麦的早熟性属数量性状。用生育期不同的亲本杂交,F_1抽穗期介于双亲之间,并倾向早熟亲本;F_1杂种的平均优势为-14.2%;F_2的抽穗期呈连续变异,并出现超亲遗传现象。小麦抽穗期的遗传力较高,平均为63.76%。F_1的抽穗期与双亲抽穗期的平均值具有明显的相关性,r=0.767,回归系数为0.715。生育期不同的亲本对杂种后代有较大的影响。一般组合受“早亲”的影响较大,但也不能忽视“晚亲”的制约作用。不同亲本早熟性的遗传传递力不同。在育种工作中应注意早熟亲本的选择。根据早熟性遗传规律,可以“早中选早”,也可以“晚中选早”,在杂种的早期世代选择早熟的类型是有效的。

    There were 10 parent cultivars and their 11 progenies consisting of 514 hybrid seedlings used in this study. The phenological phases consisting of times of leaf-break, flowering,fruit ripening and leaf-fall were concerned, and compa-red with the correlations between their phenological phases and their correlated inheritances. The results obtained were that between the time of leaf-break and flowering period, we found a highly significant positive correlation, while between the time of leaf-break and fruit maturing...

    There were 10 parent cultivars and their 11 progenies consisting of 514 hybrid seedlings used in this study. The phenological phases consisting of times of leaf-break, flowering,fruit ripening and leaf-fall were concerned, and compa-red with the correlations between their phenological phases and their correlated inheritances. The results obtained were that between the time of leaf-break and flowering period, we found a highly significant positive correlation, while between the time of leaf-break and fruit maturing period, and between the time of flo-wering and fruit maturing period, we found a significant negative correlation. But we found insignificant or no correlations between the time of leaf-fall and other phases

    作者试验研究了梨的10个杂交亲本,以及11个杂交组合的514个杂种实生苗的物候期,其中包括萌芽期、开花期、果实成熟期和落叶期。并且比较了各物候期间的相关性和相关遗传现象。结果表明:萌芽期与开花期之间有高度显著的正相关;萌芽期与成熟期,开花期与成熟期之间也都表现有显著的负相关;落叶期与其它各物候期之间则相关不显著或不存在相关性。 杂种的各个物候期与其杂交亲本有依赖关系,表现出亲本对后代的遗传效应,因此可以通过亲本的选择来估计杂种的表现。此外,亲本与杂种间,萌芽期与开花期,萌芽期与果实成熟期,以及开花期与成熟期方面,都表现出明显的相关遗传现象。因此在一定范围内对杂种实生苗可以根据某一物候期来预测另一相关物候期的到来,从而指出了在实生苗结果前的萼期阶段进行早期鉴定的可能性。

    We have studied the inheritance of several characteristics of thehybrid between Triticum aestivum L.and the octoploid Agrotriticumwhich was developed from bakcrossing(T.aestivum L.×Agropyron elon-gatum or Agropyron glaucum)to T.aestivum L.The main results are asfollows.(1)The seed setting of the immediate crosses and their hyb-rid progenies are faily good.(2)In the octoploid Agrotriticum manygood characteristics such as resistance to rusts,long spike and multiplefloret,probably derived from Agropyron can be...

    We have studied the inheritance of several characteristics of thehybrid between Triticum aestivum L.and the octoploid Agrotriticumwhich was developed from bakcrossing(T.aestivum L.×Agropyron elon-gatum or Agropyron glaucum)to T.aestivum L.The main results are asfollows.(1)The seed setting of the immediate crosses and their hyb-rid progenies are faily good.(2)In the octoploid Agrotriticum manygood characteristics such as resistance to rusts,long spike and multiplefloret,probably derived from Agropyron can be transferred to the hyb-rid progenies.(3)Date of heading of F_1 tends to approach the earlierparent.(4)Some F_2 plants are apparently shorter than the wheat pa-rent.(5)Extensive segregation is found in the hybrid progenies andvarious types could be used as valuable material for wheat breeding.So it is an easy and effective method to use octoploid Agrotriticum asparent in distant hybridization of wheat.

    作者对普通小麦与八倍体小偃麦杂交后代的几个主要性状的遗传进行了研究,其结果如下:(1)杂交当代结实率较高;杂种后代育性较好。(2)偃麦草所具有的抗病、大穗多花等优良性状通过八倍体小偃麦可以传递给杂种后代。(3)F_1的抽穗期具有明显的倾早性;F_2具有明显的超矮亲遗传现象。(4)杂种后代变异类型十分丰富,为小麦杂交育种提供了宝贵的原始材料。

     
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