分子演化被认为在很大程度上是由稍微有害的氨基酸取代的传播驱动的。
If protein evolution is due in large part to slightly deleterious amino acid substitutions, then the rate of evolution should be greater in proteins that contribute less to individual fitness.
竹节虫确实是重新长出了翅膀，但是还并不清楚在分子水平上这是不是逆演化。
The stick insects may indeed have evolved a new set of wings, but it is not clear whether this change appeared as reverse evolution at the molecular level.
他表示，驱动人类神经系统、肌肉和心脏的相同分子体系演化成了一种仅仅用来发电的器官。
The same molecular machinery that drives our nervous system, muscles and heart has evolved into an organ just to produce electricity, he said.
这样一种关系使得水分子作为一种媒介，服务于宇宙中最复杂分子的生长和演化，包括酶，蛋白质和所有活着的生物的母体，DNA。
That's allowed it to serve as the medium for the growth and evolution of the most complex molecules in the universe, including enzymes, proteins, and the mother of all known living creatures, DNA.
如果这种对分子水平的道罗法则的研究继续下去，桑顿博士相信可以发现演化史中的一些重要历程。
If this molecular Dollo's law holds up, Dr. Thornton believes it says something important about the course of evolutionary history.
天然突变——演化过程中在分子的层次上主要是经由随机的基因流而决定，并非借由天择所影响。
Neutral mutation — Evolution at the molecular level is primarily determined by mutational input and random genetic drift, rather than by natural selection.
分子外流标志着恒星形成早期演化的一个重要阶段。
Molecular outflows mark an important phase in the early evolution of star formation.
在分子系统演化研究中，所使用的数据大多是DNA序列、氨基酸序列和分子标记。
The majority of data set used in molecular phylogenetic research comes from DNA and amino acid sequences and sometimes also molecular markers.
从化石记录和分子生物学证据方面探讨了大熊猫分类和演化的研究现状及进展。
This paper mainly discusses recent advances on taxonomy and evolution of giant panda in view of fossil record and molecular biology.
内容、特色、意义运用分子生物学技术和生物信息学分析方法，比较研究动物基因、基因组的演化，揭示动物类群的进化和系统生物学关系。
The researches are focus on comparison of the animal genes or genomes evolution for revealing phylogenetic relationships among lineages using the molecular biotechnique and bioinformatics method.
讨论了线偏振微波场中氨分子的演化。
The evolution of the ammonia molecule in linearly polarized microwave field was discussed.
生物标志物以分子化石的形式记录了沟鞭藻的起源及演化历史。
Biomarker, as molecular fossil, recorded the origin and evolutionary history of dinoflagellate.
几乎任何一种分子都能被演化。
国内外在现代分布、系统分类及其演化、化石历史、遗传学以及分子生物学等方面对栎属植物进行了深入的研究。
The researches of Quercus have been on the modern distribution, origin and phylogeny, fossil history, genetics and molecular biology etc.
自由基分子及分子离子光谱在天体演化、化学反应动力学、医学等方面具有重要意义。
Free radicals and molecular ions play an important role in the study of interstellar medium, chemical reaction dynamics and medicines.
两组微古植物各具特色，但也存在一些共同分子，表现为连续演化的特点，说明震旦系和寒武系的沉积是连续的。
The microfossil plants of the two formations have their own peculiarities, but have some common elements too. This shows that the deposition of the Sinian and Cambrian were continuous.
正因为连锁信读来流畅，所以特别适合做为教授物种演化史的教材，而不必使用分子生物学的艰深语言。
Indeed, their readability makes them especially suitable for classroom teaching of phylogeny( evolutionary history) free from the arcana of molecular biology.
根据AP方程，部分子不断地从一个演化为两个较小动量的部分子。
According to AP equation, one parton will split into two partons with smaller momentum continually.
通过计算，研究了单链高分子的均方回转半径、均方末端距以及末端距向量自相关函数随时间的演化过程。
Evolutions of the mean square radius of gyration, the mean square end-to-end distance and the autocorrelation function of the end-to-end vector are simulated.
通过计算机模拟技术，对短程力步长在星系中的分子云和恒星的演化中的作用做了详细的研究。
The effect of the step for the short self-gravitation of molecular clouds is studied by means of numerical simulation.
根据观察结果，对导管分子穿孔板的演化及黄三七属植物的系统位置进行了分析。
The evolution of the perforation plates of the vessel elements and the systematic position of genus Souliea were discussed in the paper based on the present observation .
两组微古植物各具特色，但也存在一些共同分子，表现为连续演化的特点，说明震旦系和寒武系的沉积是连续的。
The microfossil plants of the two formations have their own peculiarities, but have some common elements too. This shows that the deposition of the Sinian and Cambrian were c...
两组微古植物各具特色，但也存在一些共同分子，表现为连续演化的特点，说明震旦系和寒武系的沉积是连续的。
The microfossil plants of the two formations have their own peculiarities, but have some common elements too. This shows that the deposition of the Sinian and Cambrian were c...
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