遗传因子的

There i s also considerable recent evidence to suggest that biology, including genet ic or inborn hormonal factors, play a significant role in a person's sexuali ty.

最近，也有大量的证据表明，包括遗传和天生的荷尔蒙因子在内的生理原因对于一个人的性取向起着至关重要的作用。

The performance of the final model was evaluated according to the Root Mean Square Error of Prediction and the Correlation coefficient in prediction and calibration sets.

研究了利用联合区间偏最小二乘法和遗传偏最小二乘法等筛选特征谱区的方法，通过交互验证法确定偏最小二乘模型的主成分因子数和筛选区间，并以预测均方根误差和相关系数R作为模型的评价指标。

It is the main point to focus on the elucidating of the pathogenesis of PNC as a polygenetic inheritance tumor, primarily establishing of the concept of susceptibility gene groups in NPC and the carcinogenesis model of the multi-step Domino effect involved in the molecular mechanisms of NPC dominated by susceptibility gene groups in order to lay out a substantial foundation for finding the high-risk susceptibility factors of NPC, screening the high-risk population of NPC and exploring the targetic and individual measures in diagnosis and treatment of NPC.

现主要阐述鼻咽癌作为一种多基因遗传性肿瘤的病因发病机制，初步建立鼻咽癌易感基因群的概念和鼻咽癌发生发展过程中易感基因群主导的多阶段性多米诺骨牌效应分子机制假说，为寻找鼻咽癌遗传易感风险因子，筛选鼻咽癌高危人群以及探索鼻咽癌靶向性及个体化的诊断和治疗手段奠定实验与理论基础。

A Clonal Strategies based multicast algorithm is presented in this paper, which saliently solves the "prematurity" problem in Genetic based multicast algorithm. Furthermore, the algorithm is accelerated by using an adjustable parameter to reduce the search space.

提出的基于克隆策略的多播路由算法，有效地解决了&遗传&多播路由算法中的&早熟&问题，并通过引入一个可调因子缩小了搜索空间，加快了算法的收敛速度。

RAPD analysis indicated that somatically compatible strains and strains having identical mating type factors were classified into a group firstly in a cluster dendrogram based on DNA similarity coefficient.

RAPD分析显示，体细胞亲和的菌株，交配型因子完全相同的菌株，在基于DNA相似系数的遗传相关聚类中，首先聚为小类。

The results show that the cotton assorting scheme obtained by the improved hybrid genetic algorithm is more reasonable and the resulting mixed cotton exhibits better quality.

结果表明：改进的混合遗传算法给出的配棉方案比较合理，混合棉质量指标精度较高；由于增加了局部寻优算子和最速下降因子，算法的寻优能力和收敛速度得到了加强。

EPEC can produce pedestals, and the bacterial factors involved in attaching and effacing lesion formation, modulates several signal transduction pathways within the host cells and the genetic basis of EPEC pathogenesis have been widely studied.

EPEC形成基座、产生粘附和脱落损伤的细菌因子、导致宿主信号转导改变的途径及其发病机制的遗传基础都已经得到广泛的研究。

From the statistical analyses of the descriptors used in the evolution procedure, three of them, including the partition coefficient (APlog98), indicator, E-State key were found to be the principal features affecting the biological activity, which supplies a guide for the design and reconstruction of new Ribonucleotide Reductase Inhibitors.

同时，通过分析在遗传优化过程中分子参数出现的频度，还得到了可能对活性影响较大的几个重要分子参数，它们分别是水／辛醇分配系数(ALogP98)、指示因子以及电性拓扑态指数。对该类抑制剂的设计和改造提供了指导。

Some stimulators, including viruses, tumor cells and hot shock, could promote the expression of NKG2 receptors and their ligands via activating certain transcription factors which are capable of up-regulating NKG2 promoters' activity. Meanwhile, epigenetic mechanisms including DNA methylation and histone posttranslational modifications are also critical to expression of NKG2 receptors and their ligands and may control the clonally distribution of some NK cell receptors.

病毒、肿瘤和热休克等刺激可以通过激活相应的转录调节因子，提高启动子活性而上调NKG2家族受体及其配体的表达，而启动子区DNA的甲基化状态、组蛋白的乙酰化和甲基化等表观遗传调控，在NK细胞受体及其配体的表达方面亦起重要作用，并决定NK细胞受体的克隆性分布。

According to the foundings and results of the research, this reportputs forward the objective of introducing foreign genetical materials andthe method and measurements of cultivating new varieties consideringthe germplasm resources of Chinese alfalfa germplasm resources.

在数量分类的基础上，应用双重筛选逐步回归分析建立了中国苜蓿遗传属性与环境生态因子梯度相关的数学模型，反映了DCA排序与水分和热量的数学关系。应用这些模型可以预测中国苜蓿基因生态类型的时空格局。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。