查询词典 parent-child

Prom the differences among these hybrids, the basic genetic parameters of quatitative characters were estimated for the two parent's population apart.

优良自交系亚总体各性状的遗传方差则普遍减小，说明其遗传基础更为狭窄。所以，为了不断地育出更好的自交系间杂种，迫切需要补充新的基因源。

In Chapter 4,The convergence of two forms of genetic algorithms base donthe feature of the non-formal selection strategies is proved including themodel of genetic algorithms under the population fitness constraints and somehigher fitness individuals in parent population participating in the comp-etition.

第四章以非形式化选择为特点，给出遗传算法的种群适应值约束下算法模型与父代种群前若干适应值高的个体参与竞争下遗传算法的收敛性。

Analyzed the hereditary variation distribution of amylose content in DH population, estimated hereditary capacity and rate over parent in DH population by the model and formul which were presented by Choo and Reibergs, and examined the number of gene pairs and the pattern of gene interaction which controlled these characters.

应用Choo和Reibergs提出的模型及公式，分析了这6个DH群体AC的分布、测算了遗传力、超亲率，检测了AC的基因对数及基因互作方式。

There are some characteristics for reliability growth test evaluation of liquid rocket engine, such as its field test data is small sample, there are multi-kind stresses act on the system during accelerated life test, its life test data belongs to a dynamic parent population.

液体火箭发动机可靠性增长试验的特点有：系统现场试验为小子样、加速寿命试验中存在多种应力综合作用、可靠性增长试验数据属于动态统计母体。

稀有物种,生境损失和灭绝(V1) Founder effect This term describes the establishment of a new population by one or a few individual, resulting in low levels of genetic variation and often a disproportionate number of alleles that are rate in the parent population.

Genetic bottleneck 建立者效应建立者效应描述由一个或几个个体建立新种群，导致低水平的遗传变异和在亲本种群中稀少的等位基因的经常不成比例的数量。

Methods Microsatellite markers of mice and rat were adopted to develop markers and methods suitable for genetic monitoring for SPF golden hamster population and its parent conventional population from Chengdu Institute of Biological Products by fluorescence-based semi-automated genotyping method. Genetic diversity and differences of the 2 golden hamster populations were analyzed based on the result of microsatellite alleles.

应用小鼠和大鼠的微卫星标记筛选适于金黄地鼠遗传检测的微卫星标记，并结合微卫星荧光标记－半自动基因分型技术，对成都生物制品研究所的SPF级金黄地鼠及其来源的普通级金黄地鼠进行遗传检测，计算其群体遗传学参数。

Along with the variety of altitude, the mountainous climate、vegetation、biology、parent population etc also have regular varieties, So the mountain soils represent distinct vertical variations on the vertical zone, and that engender many type of soils.

垂直地带是山地所特有的自然现象，随着海拔高度的变化，山地气候、植被、生物、成土母质等自然要素也发生着规律性变化，因此，山地土壤在垂直带上表现出明显的分异规律，形成多种土壤类型。

The rapid evolution of a new species from a small population that is partially or totally isolated from the parent population; usually involves a few mutations that have a large impact on the organisms' observable physical traits.

这种方式通常在物种的物理性质上伴随着大规模变化。

P. denasta harbored the three chlorotypes, two of which were characteristic of its two parental species respectively. The third chlorotype was extensively distributed in seven of the ten P. densata populations analyzed, and might represent a mutation type or have been derived from an extinct parent. Population differentiation of P.

TT和GC分别是油松和云南松种特异性叶绿体单倍型，而在高山松群体里则三种单倍型均有分布，而且TC单倍型广泛地分布在7个杂种群体中，该单倍型很可能来源于点突变或第三个已灭绝的亲本。rbcL基因检测到的高山松群体分化系数很高（G〓=0.533）。

The fact that the pink plants were predominant among the population of RP1 cross progeny hints that the pink had the strong descendiblity, Whereas another fact that the plants with the color of another parent were predominant among the population of R01 cross progeny indicates that the nacarat/saffron plant had the low descendiblity. The above results suggest that it is better to choose the pink plants with the target color flower of breeding as a parents when arranging the cross combination. Many novel flowers with singular value of view and admire can be bred by the different cross combination since the wide segregation chromatogram is not confined to the parents'.

以RPl及R01作母本或父本，分别与不同花色杂交，F1代发生了明显的花色分离，RP1的杂交后代均以粉色占优势，表明粉色的遗传力较强，R01的杂交后代均以其它亲本占优势，表明桔黄/桔红的遗传力较弱，因此在选配组合时，最好选择具有育种目标的粉色个体作为亲本；另外由于分离谱较广，且分离的色谱范围并不完全限于双亲之间，可根据不同的杂交配组，培育出具极高观赏价值的稀有花色。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。