But evolution also requires repeated replication and mutation to generate the variation upon which selection works to give adaptive solutions.
但是进化还需要反复复制和突变产生赖以选择的变异，从而给予适应性解决方案。
Two of the studies pointed to a genetic variation in the gene that is found commonly, and a third found a rare mutation of this same gene.
其中两项研究指出了该基因上的一种常见遗传变异，而第三项研究发现了该基因的一种罕见变异。
Besides the tendency variation in each point, the strain mutation appears except the sample of soft inclusion, based on which the concept of strain nucleation is put forward.
除软包体型试样外，各点应变除趋势性变化外，都出现应变突变。据此提出应变成核概念。
Objective To observe the relationship between morphological mutation of rabbit cornea after cornea alkali burn and the variation of collagenase content in lacrima.
目的观察兔角膜碱烧伤后形态学变化与泪液中胶原酶含量变化间的关系。
However, in the HLA A2 - individual, the epitope had neither variation nor amber mutation in 5 years after infection.
在无HLAA2表型的感染者中，其感染后5年病毒抗原表位肽段既无共有序列的变异，也无琥珀突变。
This optimality criterion contains maximal probability fits, minimal variation fits and minimal mutation fits.
这个一般准则包括了最大概率拟合、最小变化拟合、最小突变拟合等。
Somatic mutation, a main biological phenomenon of citrus and other fruits, is often used for breeding as a major variation source. Spontaneous mutations often occur in citrus.
体细胞突变是柑橘等果树比较常见的生物学现象，也是品种选育，即芽变选种的主要变异来源。
The variation is quite common among regenerated plants after tissue culture, and the frequency of mutation is very high.
这种变异在植物组织培养后的再生植株中常表现得非常广泛，而且变异频率非常高。
HIV virus is the largest genetic variation in human pathogens, with a high reproduction, high mutation, the reorganization of the high.
HIV病毒是人类最大遗传变异的病原体，具高复制性，高突变性，高重组性。
This course presents the information that has been collected from studying genetic variation in model systems like nematode and drosophila for mutation studies.
这个课程提供的信息是从研究典型系统的遗传变异获得的，这些典型系统都是用于突变研究的，如线虫和果蝇。
Our results showed that the trend of ZYMV variation for its rapid adoption for fitness of the ecological condition, especially to host interaction by mutation of its genomic RNA.
研究结果初步揭示了ZYMV作为单链RNA病毒通过与寄主相互作用而表现寄主适应性变异的趋势。
Comparing people with the mutation and volunteers without the genetic variation helped the researchers better gauge long-term effects of drinking, they said.
研究者们说，比较基因突变的人群及没有基因突变的志愿者能帮助研究者们精确估计酒精的长期影响。
As compared with the conversational breeding, spaceflight mutation breeding is of high mutagenesis frequency, wide variation extent, short breeding period and more elite mutants, etc.
与常规育种相比，航天诱变育种具有诱变频率高、变异幅度大、育种周期短、有利突变体多等特点。
While translated to Amino acids sequences, Yellow showed little genetic variation. 18 individuals belong to only 5 haploids, and only 6 sites of AA mutation causing 8 AA mutations exist.
将核酸序列转换成氨基酸序列后，黄牛表现的遗传差异更小，18个个体分享5种氨基酸序列单倍型，共有6个氨基酸突变位点，8个突变氨基酸。
Logging curves changed abruptly due to obvious variation of physical properties at the interface of parasequence unit. The mutation can be revealed clearly by wavelet transform of logging data.
准层序地层单元的分界面上物理性质变化明显，测井曲线表现为突变，测井数据小波变换能够表征这种突变。
Logging curves changed abruptly due to obvious variation of physical properties at the interface of parasequence unit. The mutation can be revealed clearly by wavelet transform of logging data.
准层序地层单元的分界面上物理性质变化明显，测井曲线表现为突变，测井数据小波变换能够表征这种突变。
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