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。
Much change is due to random genetic drift rather than positive selection. It could be called the survival of the luckiest.
许多变化源于基因的随机变异而非自由选择。我们可以称其为幸运者生存。
That implies that these regions are so important for the organism that their DNA sequences are maintained by positive selection.
这意味着这些区域对于机体如此重要以至于它们的DNA序列通过主动选择来保持。
The main operators of the algorithm included hyper mutation, positive selection to produce memory cells and similar cell suppression.
算法的主要操作算子包括超变异、正选择、记忆细胞产生和抗体相似性抑制。
The researchers also found positive selection in four pigment genes important for lighter skin in Europeans that were not known before.
研究人员还首次发现四种色素基因的进化对欧洲人至关重要。
The main operators of the algorithm include positive selection, memory cells producing, hyper-mutation and similar antibodies suppression.
算法的主要算子包括正选择、记忆细胞产生、超变异和抗体相似性抑制。
Increased efficiency of regeneration, better growth and survival has been observed on subjection to the described method of positive selection.
根据所述的正选择方法，观察到增加的再生效率、更好的生长和存活。
The MHC restriction of t cell is determined in positive selection. The tolerance of t cells to autoantigen is acquired during negative selection.
阳性选择决定了成熟T细胞的MHC限制性，阴性选择使机体获得自身免疫耐受。
Applicants who have received a positive selection decision have received or will be receiving shortly a letter informing them they have been provisionally accepted.
有接受肯定的选择决定的申请者有收到或不久将会收到信告知他们有暂时的被接受的他们。
The main operators of the algorithm included hyper-mutation, positive selection to produce memory cells and excellent sub-population, similar cell suppression, reorganization operator.
算法主要包括超变异、正选择、记忆抗体产生、优育抗体产生、细胞相似抑制、整理算子。
It is likely that the genes involved, which include genes that encode neuronal ion channels, have been subject to a positive selection pressure leading to an accelerated evolution of genetic changes.
与之其进化相关的基因，包括编码的神经离子通道的基因，可能受到了积极的选择压力，从而加速了基因变化的转变。
Despite the fear of a decrease in travel, Abacus' air booking data showed that there are some green shoots in terms of a selection of positive market performances.
虽然人们对旅游衰退存在担忧，但Abacus的机票预订数据显示，一系列积极的市场表现方面存在新生希望。
Positive control of the blood pressure, selection of appropriate anticoagulant and protection of RRF have important clinical significance.
积极控制血压、选用恰当的抗凝方法以及保护RRF有着重要的临床意义。
Positive aspect of the selection process at Google.
谷歌选择过程中的积极方面。
The main factors determining the host selection behaviors of aphids are food source stimuli. If aphids receive appropriate positive stimuli, they begin feeding.
决定蚜虫寄主选择行为序列执行的因素主要是食物源刺激，蚜虫在活动中若得到适当的正向刺激，就开始取食。
In the part of the design, the jury selection, player performance, performance became vulgar, departuring from the basic orientation of positive and healthy and damaging the image of television.
在环节设计，评委选择，选手表现，表演内容等方面存在低俗的问题，背离了积极健康向上的基本定位，损害了电视媒体的形象。
Then, applying positive analysis methodology and based on the reality and theory analysis, the paper establishes the multinational manufacturing outsourcing supplier selection model.
其次，运用实证分析的研究方法，以现实和理论两个维度为依据构建了跨国生产外包中代工企业选择模型。
This paper, with the positive research method, analyzed the influence of industry selection on the market value of enterprise in Chinese market environment.
本文用实证研究的方法，分析在中国的市场环境中，行业选择对企业市场价值的影响。
Positive clones were obtained by the selection inG418 conditioned culture.
经g 418条件培养筛选，获得阳性细胞克隆。
STUDY SELECTION: After the above research, the literatures about the relationship of HIV-positive people with exercise and immunity were selected.
资料选择：对资料进行初审，选取关于艾滋病毒感染者与体育运动及免疫关系的文献。
Conclusion EMG may be an important means of diagnosing DM. Selection of quadriceps, biceps and anterior tibial muscles for EMG may be helpful in increasing the positive rate of EMG.
结论肌电图检查是诊断dm的重要手段，选择股四头肌、胫前肌及肱二头肌进行EMG检查阳性率最高。
Conclusion EMG may be an important means of diagnosing DM. Selection of quadriceps, biceps and anterior tibial muscles for EMG may be helpful in increasing the positive rate of EMG.
结论肌电图检查是诊断dm的重要手段，选择股四头肌、胫前肌及肱二头肌进行EMG检查阳性率最高。
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