查询词典 Evolution

The occurrence of peridinin in the alga shows that Xanthophyta is closely related Dinophyta in terms of evolution.

多甲藻素在该种的存在显示了黄藻在进化上与甲藻有较近的亲源关系。

Basic Mathematics has undergone an amazing evolution and born fruit on fields such as algebra, functional analysis, dynamic system, algebraic number theory and differential geometry.

基础数学的研究经过多年工作积累，在代数学、泛函分析、动力系统，代数数论，微分几何等领域在国内外有一定影响。

The algorithmization of counterfactuals now brings us a giant step closer to understanding why evolution has endowed humans with the illusion of free will, and how it manages to keep that illusion so vivid in our brain.

算法化反事实如今让我们距离了解为什么进化给与了人类自由意志错觉及它是如何让这种错觉在我们的头脑中栩栩如生迈出了巨大的一步。

We thought that only an all-embracing study would answer our question reefs are general cradles of evolution, he says.

他说："我们认为，只有囊括一切的全面研究才可以回答我们提出的问题---礁石是不是一般生物计进化的摇篮。"

During the postgenomics era the information about genomic sequence and gene functions provides a new foundation for evolutionary biology and ecology As the first whole-genome sequenced plant Arabidopsis thaliana and its wild relatives have played a critical role in understanding the evolution of genomics and speciation Both A halleri and A lyrata are closely related to the model species A thaliana A halleri ssp gemmifera occurs in northeastern China Japan and Taiwan; while its sister A halleri ssp halleri is mainly distributed in Europe Geographical barriers such as Tienshan Mountain Range isolate these intraspecific sisters Likewise A lyrata ssp kamchatica and ssp lyrata occur in East Asia and North America respectively Such distribution patterns seem to be consistent with allopartic speciation The comparison between ancestral and extant polymorphism by multilocus can be informative about the population genetics of speciation In this study we collected and analyzed DNA sequences of 98 genes from four wild relatives of A thaliana A halleri ssp gemmifera A halleri ssp halleri A lyrata ssp kamchatica and A lyrata ssp lyrata The ancestral states of these four species were compared to each other in terms of level of genetic variation However the ancestral species at the time of speciation were substantially more polymorphic than the extant geographical populations The observations are not fully compatible with speciation by strict allopatry At some species pairs parapatric speciation seems more reasonable in speciation of Arabidopsis The 98 gene sequences are also used for the congruence test between gene genealogy and species phylogeny Only 28 genes support the species phylogeny but there are 23 genes supports another major genealogy { lyrata} thaliana Based on the phylogenetic position change of A lyrata ssp kamchatica and Ks value for each species pair suggested the recent directional gene flow between A halleri ssp gemmifera and A lyrata ssp kamchatica

阿拉伯芥是第一个完成基因体定序的开花植物，其基因体资讯提供植物学研究的重要依据；在解析阿拉伯芥属物种的亲缘关系以及种化机制等重要的演化议题时，阿拉伯芥近缘的野生物种自然成了不可或缺的关键；跟阿拉伯芥近缘的物种包括A halleri及A lyrata，其中A halleri ssp gemmifera主要分布於中国东北、日本以及台湾，与近缘的A halleri ssp halleri其分布於欧洲隔著天山及大陆的障蔽，而A lyrata ssp kamchatica主要分布於东北亚及台湾，与分布於北美五大湖的A lyrata ssp lyrata被北极圈所分隔，这样的分布模式暗示异域种化的可能。藉由多基因分析比较祖先物种与现生物种遗传歧异度的相关可提供讯息探讨种化时期的族群遗传结构，本研究针对A halleri ssp gemmifera、A halleri ssp halleri及A lyrata ssp kamchatica、A lyrata ssp lyrata四个物种，两对互为亚种的姊妹群，以阿拉伯芥为外群进行研究，在四个物种完成98个同源基因的分子序列，利用套装软体MCMCcoal来估算祖先物种的遗传变异，亦估算现生物种的核苷酸歧异度，观察到？多物种配对中祖先物种遗传多型性大於现生物种DNA歧异度，显示异域种化模型并无法完全解释阿拉伯芥属物种的种化模式，在某些物种配对间邻域种化模式应比异域种化更为可能；在基因树与物种树的比较，98个基因片段的亲缘模式只有28个是与已知物种树一致的，有23个基因其树状图支持{ lyrata} thaliana的型式，藉由kamchatica位置的变化以及估算各物种配对间的平均同义置换率，推测在A halleri ssp gemmifera与A lyrata ssp kamchatica间具有近代的单方向基因交流。

These DNA sequence changes might contribute to the rapid evolution of the newly formed allopolyploid and allow the divergent genomes to act in harmony.

杂种后代DNA序列的这种变化可能有利于新形成异源多倍体小麦的快速进化、遗传协调和遗传稳定性。

Immediately after admission, the 290 nm band has disappeared and evolution of bands in the range of the di-, tri-~nd tetraenylic ions proceeds, resulting in the same final spectral pattern as when starting from allyl alcohol.

入院后立即，在290纳米带已经消失和演化的乐队在二叔，三范围届tetraenylic离子的收益，在同样的最终结果光谱格局从丙醇时开始。

Compared with the model which considering alpha particle depositing its energy instantaneously into the plasma, the temporal evolution of plasma temperature and particle number density are calculated.

第二章导出了带电粒子在等离子体中慢化的能量变化率和阻止本领，以及两种拥有独立温度的带电粒子之间的能量交换率。

In a conclusion, there were a considerable proportion of relict and remnant elements which can be traced back to Mesozoic, and even Paleozoic, as well as typical ancient endemism. All of these fully showed evolutionary conservatism and phylogenetic antiquity of the Alsophila spinulosa community during the process of vegetation evolution.

由此可见，桫椤群落区系组成与起源年代都十分古老；与桫椤伴生的成分中存在较大比例的中生代甚至古生代的古老遗存物种，也明显表现出其在植被进化中的保守性和种系发生的古老性。

Researchers on alleged altruist behaviours among animals have been ideologically opposed to the social darwinist concept of the "survival of the fittest", under the name of "survival of the nicest"-the latter being globally compatible, however, with darwinist' theory of evolution.

研究人员据称altruist行为动物中已思想上反对社会darwinist概念"适者生存"的名义下"的最好的生存"，后者是全球兼容的，但是，随着darwinist '进化论。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。