The problem of gene selection for cancer classification is considered.
研究了有关癌症分类的基因选择问题。
The traditional statistical methods encounter limitations in the process of gene selection.
传统的统计学方法在基因选择中，表现出了较大的局限性。
Therefore, grain-based alcohol played a much weaker role in the gene selection of European races.
因此，谷物酒在欧洲种族的基因选择中起到的作用非常小“。
The methods of diagnostic gene selection for multi-class diseases based on SVM are studied in this paper.
本文针对基于SVM的多病类诊断基因选择方法进行了研究。
This thesis improves tumor samples classification of gene expression data in two aspects: classification algorithm and feature gene selection method.
针对基于基因表达数据的肿瘤样本分类，本文从分类算法和特征基因选取方法两个方面进行了改进。
Gene selection is a very important problem in microarray data analysis and has critical implications for the discovery of genes related to serious diseases.
基因选择是基因芯片数据分析中的一个重要问题。
The problem of feature gene selection and tumor samples classification of microarray gene expression data is one of challenges of gene microarray technology.
基因表达数据的特征基因选取和肿瘤样本分类问题是基因微阵列技术的挑战性课题之一。
In these research areas, sample classification based on gene expression data is acting a very important role, it generally has two pivotal steps: gene selection and Classifier design.
在这个研究领域里，基于基因表达数据的样本分类扮演着很重要的角色，它一般具有两个关键步骤：基因选择和分类模型设计。
To verify that a gene has indeed been under selection, biologists need to perform other tests, like comparing the selected and unselected forms of the gene to see how they differ.
要确认一个基因的确正在被选择，生物学家需要进行其他测试，例如比较被选的和没被选的基因形式来看它们有什么差异。
The case of the EDAR gene shows how cautious biologists have to be in interpreting the signals of selection seen in the genome scans.
EDAR基因的案例显示了生物学见们在解读基因组扫描的选择信号时必须多么小心。
The cases of natural selection that have been tracked so far take the form of substantial sweeps, with a new version of a gene being present in a large percentage of the population.
我们目前跟踪过的自然选择案例大多都较为全面经历过基因扫描，新版基因在某种人当中出现比例非常大。
In the first case, strong positive selection for the gene is dissipated by weak selection against hundreds of others.
前一种局面下，自然选择机制对好基因的积极选择，被其余几百个坏基因的逆选择白白浪费掉了。
Myles Axton, the editor of the journal that is publishing the report, said he was not persuaded by the argument that the dry earwax gene had been favored by natural selection.
刊登这份报告的期刊编辑MylesAxton说他并不认为干态耳垢基因是自然选择的结果。
By contrast, if the sequences function as switches, then they are expected to be very similar because they are under selection to maintain their gene-regulating function.
相比之下，假如序列执行开关的职能，那么它们会非常相似，因为它们经过选择保持他们的基因调控功能。
This thesis improves classification using gene expression data method in two aspects: feature selection and SVMs classification algorithm.
针对基于基因表达数据的分类，本文从特征基因选择和支持向量机分类算法两个方面进行了改进。
Random fluctuations in the frequency of the appearance of a gene in a small, isolated population, presumably owing to chance rather than natural selection.
在一个小的、与世隔绝的种族里，基因面貌频率上的偶然波动，可能因为偶然性而不是自然选择。
Clone copy operator, immune gene operator and clone selection operator were performed during the evolutionary.
在算法进化过程中，引入克隆复制算子、免疫基因算子、克隆选择算子。
It is becoming a useful tool for studying cell differentiation, the mechanism of development, gene function, medicine selection, cell therapy and so on.
胚胎干细胞的发现为研究细胞分化，动物和人发育机制，阐明基因功能，筛选药物，细胞治疗疑难杂症等开辟了广阔的空间。
At present, the key problem is focused on the selection of what kind of reporter gene probe would be.
当前，报告基因显像的焦点是选择何种报告基因探针进行基因显像。
By integrating gene pool and high frequency aberrance into dynamic clonal selection algorithm, the efficiency of evolution can be improved.
将基因库和高频变异加入动态克隆选择算法，提高检测器的进化速率。
The result indicate that population gene frequency variety expedite by selection and the test testify green-shell character is controled by a pair of complete dominant allele.
选择加快了群体基因频率的改变，青壳蛋性状确为由一对主效基因控制的完全显性遗传性状。
Molecular marker-assisted selection (MAS) provides a very efficient tool for backcross breeding because it can offer rapid and precise selection of the targeted gene.
分子标记辅助选择技术以其对目标基因快速而精确的选择为回交育种提供了非常有效的工具。
Phenotypic mass selection for improvement of scab resistance was effective and feasible in a wheat gene pool.
应用表型混合选择改良小麦基因库抗赤性是有效可行的。
OBJECTIVE To investigate the effect of drug concentration, drug structure of fluoroquinolones on the resistant gene of Escherichia coli mutants selected in the mutant selection window (MSW).
目的：研究不同药物浓度、不同化学结构的氟喹诺酮类药物对突变选择窗(MSW)内筛选的大肠埃希菌耐药突变体的靶位耐药基因的影响。
For the best use of marker information in a marker aided backcrossing program for gene introgression, a stepwise marker genotyping and individual selection were suggested.
因此，为了在标记辅助回交育种中充分利用标记信息，应当分步骤鉴定标记基因型和选择个体。
Variation in rooting ability is mainly affected by gene additive effect. Selection for rooting capacity and its utilization is effective and individual selection is more effective than family one.
生根能力的差异主要受基因加性效应控制，对生根能力选择利用效果明显，单株选择较家系选择效果好，其中以全同胞单株选择利用潜力最大。
The key to gene therapy is the selection of the target gene.
基因治疗的关键就是靶基因的选择。
SSR can be expected to complement existing RFLP, RAPD, AFLP maps, and are useful for genotype identification. gene and QTL analysis, marker assisted selection in breeding and pedigree analysis.
林木的微卫星标记可扩充现有的RFLP、RAPD、AFLP遗传图谱，以及QTL分析，并应用于基因型鉴别，分子标记辅助选择育种。
How has natural selection determined the evolution of gene regulation by acting on major regulatory factors? This question has been attractive to many evolutionary biologists for a long time.
自然选择如何通过作用于重要调节因子而决定基因调节的进化方式，一直是进化生物学家感兴趣的话题。
How has natural selection determined the evolution of gene regulation by acting on major regulatory factors? This question has been attractive to many evolutionary biologists for a long time.
自然选择如何通过作用于重要调节因子而决定基因调节的进化方式，一直是进化生物学家感兴趣的话题。
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