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。
But evolution also requires repeated replication and mutation to generate the variation upon which selection works to give adaptive solutions.
他还指出，对于任何一种基因突变的化验分析都应作为补充试验，以此来反映不同机制所产生的变异。
He concluded that the assays for mutations in either gene should be considered complementary tests, reflecting mutations that occur through different mechanisms.
正如我在以往专栏中提及的那样，突变是DNA的意外变异，也是进化的原材料。
As I've mentioned in previous columns, mutations - accidental changes to DNA - provide the raw material for evolution.
但是每个人的变异有细小的影响，所以研究人员开发出一种算法结合了多种突变的共同影响。
Each individual variant had little impact, however, so the researchers developed an algorithm to combine the effects of multiple variants acting together.
该理论是指突变有助于变异性而变异性则是一个物种在面对不断变化的环境时成功生存的助力。
The idea is that mutation contributes to variability and variability drives the success of a population in the face of a changing environment.
也许表观基因变异会因DNA突变而得到强化，且由此变得稳定并以常规方式遗传下去。
It may be that epigenetic changes could be reinforced by mutations in the DNA, making them stable and heritable in the conventional way.
季节性流感的变异较缓和，被称为渐变；当像H1N1这样的新型病毒株发生变异的时候，这就是突变了。
When the mutations are gradual, as with seasonal flu, it is known as drift; when they are abrupt, as with the new strain of H1N1, you have a shift on your hands.
三个突变异种均显示比野生型具有更高的荧光素酶活性，并且V85I突变异种活性最强。
All three mutants showed higher luciferase activity than that of the wild type, and the V85I mutant showed the highest activity.
但这次试验的所有患者都来源于那“5%”(100种变异中相同的有5种)，即都带有alk基因突变的肺癌患者。
But the only patients in the trial will be from the 5 percent or so of lung cancer patients with a mutation in a gene called A.L.K..
研究者们对于6000组有可能出现突变的基因进行了逐一的检测，以便在孩子的基因序列中寻找到变异的可能性。
Looking for new mutations in the child, researchers combed through 6,000 possible mutations in each genome sequence.
研究者们对于6000组有可能出现突变的基因进行了逐一的检测，以便在孩子的基因序列中寻找到变异的可能性。
Looking for new mutations in the child, researchers combed through 6, 000 possible mutations in each genome sequence.
这个突变的菌株配有变异的蛋白质，这是其进入细胞的方式。
This mutant strain was armed with an alteration in the protein it uses to enter cells.
这些改变可能包括基因组的大量缺失，或者额外重复片断的增加，特别是快速突变和常见的变异。
Such changes could include wholesale deletions of chunks of the genome or additions of extra copies. Cancer genomes, in particular, mutate rapidly and contain frequent abnormalities.
在基因序列中这都是很小的变异——这种突变没有影响到基因的功能。
The variants are small alterations in gene sequences - they are not mutations that destroy a gene's function.
本研究旨在检测鼻咽癌组织中PIK3CA两个热点突变区的突变，以及该基因的变异与鼻咽癌发病的关系。
This study was to screen for mutations in the hotspot mutation regions of PIK3CA in nasopharyngeal carcinoma(NPC), and explore the correlation of PIK3CA mutations to tumorigenesis of NPC.
结论所检测基因突变为亲代遗传，而非个体基因变异；
Conclusion The gene mutations detected were the parental generation, rather than individual genovariation.
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。
However, in the HLA A2 - individual, the epitope had neither variation nor amber mutation in 5 years after infection.
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。
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.
在饲养之后几乎像二个突变异种一样的狼吞虎咽地，肯恩已经淋浴而且现在在床上放置。
After feeding almost as ravenously as the two mutants, Ken had showered and now lay on the bed.
研究结果表明，这个长度热点突变区的核苷酸序列分析是研究小麦与山羊草叶绿体基因组之间遗传变异关系的一个非常有效的途径。
The results indicate that the sequence analysis of the hotspot region is a very powerful tool to investigate genetic variations of chloroplast genome in Triticum and Aegilops.
温度梯度凝胶电泳(TGGE)是一种用于检测核酸序列变异和点突变的电泳方法。
Temperature gradient gel electrophoresis (TGGE) is a new and powerful electrophoresis method for separation of nucleic acids (DNA and RNA) and analysis of sequence variations.
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。
This course presents the information that has been collected from studying genetic variation in model systems like nematode and drosophila for mutation studies.
结论基因芯片技术检测HBV变异具有高通量、高灵敏等特点，对观察h BV基因突变有很高的临床应用价值。
Conclusions the gene chip technique is simple to perform and can be used as a rapid and high-throughput method. It has a high clinical value in detecting the HBV gene mutation.
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。
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.
这些突变分布于atm基因整个编码区，每个外显子都存在基因变异位点，没有发现明显的突变热点。
These gene mutation distributing in all over the whole coding section of ATM gene. Every Exon exist the gene mutated site and no obvious hot mutated site be discovered.
虽然，囊性纤维跨膜通道调节因子基因（CFTR）突变是这种疾病的病因，但在患有CF的病人之间的不同基因的变异会改变这种疾病的严重度。
Although it is known that mutations in the CFTR gene cause the disease, variations in other genes between individuals with CF modify the severity of the disease.
抗病突变体大多伴随着株高、熟期、育性或粒重等农艺性状的变异。
These mutants were almost accompanied by variations in agronomic traits such as dwarfism, high sterility, heading date or grain weight.
抗病突变体大多伴随着株高、熟期、育性或粒重等农艺性状的变异。
These mutants were almost accompanied by variations in agronomic traits such as dwarfism, high sterility, heading date or grain weight.
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