查询词典 phylogenetic development

We compared three competing hypotheses which maintained that euprimates originated in Africa, the India subcontinent, or East Asia. Combined the recent achievements on the mammalian fauna exchanges during early Eocene between Europe and Africa, Europe and Asia, and Asia and India subcontinent, the paleogeographic models of around Turgai Strait, the new dating results of the collision between Indian subcontinent and Asia, and the phylogenetic analysis of euprimate, we suggested that the Asian-origin hypothesis of euprimates are more reliable.

全面对比了真灵长类动物亚洲起源说、非洲起源说和印度次大陆起源说，结合前人有关欧洲与非洲之间、欧洲与亚洲之间、亚洲与印度次大陆之间早始新世时的动物群交流的研究，以及有关图尔盖海峡古地理、印度板块与欧亚板块碰撞时间的研究成果，在真灵长类动物分支系统分析的基础上，提出真灵长类动物亚洲起源说是目前获得支持证据最多的假说。

This study provided some new evidences for the phylogenetic relationships of Rhopalocera butterflies and its subgroup Papilioninae through the primary and secondary structure analyses of 16S rRNA gene sequence, aiming at setting up a more scientific and reasonable systematics category for the butterflies, especially for those distributed in our country.

本研究通过对凤蝶亚科以及蝶类各主要类群的16S rRNA基因序列的一级和二级结构的系统学分析，旨在为蝶类的系统分类和系统演化研究提供一些分子佐证，为进一步建立一个更为科学的自然分类系统提供部分相关基础资料。

In this study, reliable phylogenetic relationships of eight species in Pectinidae were inferred from the structure alignment, but not from sequence alignment, even with the aid of structural information.

本研究的结果显示，可靠的系统发生关系可以从完整的二级结构比对中推断得出，但不能从序列比对中推断得出。

Analysis of the secondary structure of ITS1 in Pectinidae: implications for phylogenetic reconstruction and structural evolution It is at present difficult to accurately position gaps in sequence alignment and to determine substructural homology in structure alignment when reconstructing phylogenies based on highly divergent sequences.

4栉孔扇贝与扇贝科其它7种扇贝ITS1二级结构的系统进化与结构进化分析目前，在序列比对过程中对缺口进行精确定位十分困难。

Pelobatidae is very importance in the phylogeny of anurans, but the phylogenetic relationships and taxology of this family (including subfamily, genus and subgenus )have yet produced long-time conflicting viewpoint among different researchers both domestic and abroad.

锄足蟾科在无尾两栖类的系统进化中处于极其重要的地位，长期来对该科各亚科、属、亚属的划分以及系统发育关系等问题，国内外学者尚存分歧意见。

Recent molecular phylogenetic work has confirmed that Pereskia, a genus that consists of 17 species of leafy shrubs and trees, is where the earliest cactus lineages began.

最近的分子分类遗传学研究工作证实了：仙人掌最早的家族成员名叫Pereskia，Pereskia是一种17个多叶的灌木合树种组成的属种。

Phasianus ; Chrysolopus ; Mitochondrial DNA ; Restriction map ; Molecular phylogenetic tree

雉鸡；锦鸡属；线粒休DNA ；限制性内切酶图谱；分子系统树

On PDA plate, colonies grow rapidly to 12.5~37.2 mm/21d, phialide discrete, arising solitary from the aerial mycelium, septated at the base or middle, hyaline, smooth, 14.9~23.2μm long, 1.9~3.1μm at base, tapering to less than 1.0 μm at tip; conidia hyaline, reniform to elliptical, bulk is (4.6~5.9)μm×(2.1~3.4)/lm. These morphological characteristics are significantly different from the well-described Neotyphodiurn species. Their phylogenetic relationship remains further researches.

ciliaris12株Neotyphodium属真菌为材料，详细研究了我国干旱地区Neotyphodium属真菌的形态学特征：在PDA平板上生长很快，21 d生长12.5~37.2 mm；分生孢子梗长14.9~23.2μm，基部宽1.9~3.1μm，顶端小于1μm，通常基部或近基部有隔膜；分生孢子无色透明，卵圆形或肾形，单个顶生，(4.6~5.9)μm×(2.1~3.4)μm，与其它已知Neotyphodium属真菌形态差异显著，需要进行更深入的研究。

Through the traditional physiological and biochemical method, together with the 16SrDNA sequence homology and phylogenetic analysis, the strains were identified. The result shows they belong to the genus photobacterium, but they differ from any species of this genus in some characteristic which suggests they might be new species, and their taxonomic placement needs more information on genes level.

对两株菌进行鉴定，分析其生理生化特征和16SrDNA产物序列，确定这两株菌均属于发光杆菌属，但是和该属的各种还有一定差异，对其分类地位的最后确定还需进一步的系统发育学分析。

Reconstruction of phylogenetic tree of organisms is one of the most important problems in evolution study.

重建系统演化树是进化研究的一个极为重要的方面。

A historical region of southwest France between the Pyrenees and the Garonne River. The duchy of Aquitaine was joined with France after the marriage of Eleanor of Aquitaine to King Louis VII in1137, but its possession was disputed after her subsequent marriage to Henry II of England.

阿基坦法国西南部一个历史地区，位于比利牛斯山和加隆河之间，在1137年阿基坦的埃莉诺与国王路易斯七世结婚之后阿基坦公国加入法国，但当她再嫁英国亨利二世后，其归属权便受到争议

There are moments when I look at the smiling , happy faces of my expectant staff and wonder how they will cope when confronted by an outraged housemaster along with an unrepentant and recalcitrant bleached blond teenager in 18 years ' time .

有时候，我看着那些满怀期待的员工微笑，幸福的脸，想着当他们遇到一位愤怒的宿舍管理员和一位不知悔改，叛逆，而且将头发染成白色的18岁少年时，他们会如何处理。