搜索结果: 1-12 共查到“知识库 理学 phylogeny”相关记录12条 . 查询时间(0.046 秒)
Thee-Dimensionally Preserved Arthropods from the Cambrian (Furongian) of Quebec and Wisconsin: Systematics, Phylogeny, Ichnology, and Taphonomy
Thee-Dimensionally Preserved Arthropods Cambrian of Quebec Wisconsin Systematics Phylogeny Ichnology Taphonomy
2014/10/22
Three new types of arthropod from Cambrian intertidal lithofacies of the Elk Mound Group and Lodi Member of Wisconsin, and the Potsdam Group of Quebec are described. These arthropods are preserved ven...
In this work we present the development of a workflow based on Taverna which is going to be implemented for calculations in Phylogeny by means of the MrBayes tool. It has a friendly interface develope...
In the small phylogeny problem we, are given a phylogenetic tree and gene orders of the extant species and our goal is to reconstruct all of the ancestral genomes so that the number of evolutionary op...
Fast error-tolerant quartet phylogeny algorithms
Fast error-tolerant quartet phylogeny algorithms
2010/11/15
We present an algorithm for phylogenetic reconstruction using quartets that returns the correct topology for $n$ taxa in $O(n \log n)$ time with high probability, in a probabilistic model where a quar...
Basin-wide variations in foliar properties of Amazonian forest:phylogeny,soils and climate
Basin-wide variations foliar properties Amazonian forest phylogeny soils climate
2010/1/21
We analysed 1040 individual trees, located in 62 plots across the Amazon Basin for leaf mass per unit area (MA), foliar carbon isotopic composition (δ13C) and leaf level concentrations of C, N, P, Ca,...
Molecular Phylogeny of the Gayal in Yunnan China Inferred from the Analysis of Cytochrome b Gene Entire Sequences
Gayal (Bos frontalis) Cytochrome b Gene Molecular Phylogeny
2016/4/27
The gayal (Bos frontalis) in China is a very rare semi-wild and semi-domestic bovine species. There still exist remarkable divergences on the gayal??s origin and taxonomic status. In the present study...
柴达木山羊群体遗传结构及系统地位的研究Genetic Structure and Phylogeny Status of Chaidamu Goat Population
柴达木山羊 遗传检测 系统地位
2008/1/6
摘要采用简单随机抽样法对柴达木山羊群体进行了遗传检测，从毛色、外型特征、体尺、血液蛋白与DNA多态性等5个方面进行了群体遗传结构分析，并探索了其系统地位。结果表明：(1)毛色和形态特征的平均表型异质度分别为0.3419、0.5207；(2)血液蛋白在6个基因座上具有多态性，平均基因座杂合度为0.2584；(3)DNA-RAPD标记表现丰富的多样性，基因多样度为0.4085～0.5318。通过对柴达...
孔雀活化素基因(activin)ßA 亚基成熟肽序列的分子克隆及其对白孔雀起源与分类的佐证分析Molecular Cloning of Activin ßA Subunit Mature Peptide from Peafowl and Its Application in Taxonomy and Phylogeny
孔雀 活化素基因 系统发生 分类 peafowl activin gene phylogeny taxonomy
2007/12/5
摘要参考已经克隆的活化素(activin)基因βA亚基成熟肽序列，设计一对兼并引物，从绿孔雀(pavo muticus)、蓝孔雀(pavo cristatus)和白孔雀基因组中克隆到活化素基因βA亚基成熟肽序列。测序结果表明，活化素基因βA亚基成熟肽序列长345bp，编码115个氨基酸。序列分析表明，蓝孔雀与绿孔雀核苷酸同源性为98.0%，而蓝孔雀与白孔雀核苷酸同源性为98.8%。NCBI收索结果...
Comparison of Female Antennules in Some Genera of Cyclopidae (Copepoda, Cyclopoida): Their Significance for Phylogeny
Copepoda female antennule homology Cyclopidae
2010/3/29
The homology of the antennulary segments of species belonging to some genera of Cyclopidae is determined by comparing the common setation patterns on female antennules. Comparison of the setation patt...
Jasione L. taxonomy and phylogeny
Jasione Campanulaceae ITS sequencing molecular phylogenetic analysis
2010/3/19
Jasione L., a genus with small flowers in compact ebracteolate heads subtended by involucral bracts, is very isolated in the Campanulaceae. It is mainly a Mediterranean-European genus with c. 15, most...
Phylogeny and development of marine model species: strongylocentrotid sea urchins
marine model species strongylocentrotid sea
2015/12/16
The phylogenetic relationships of ten strongylocentrotid sea urchin species were determined using
mitochondrial DNA sequences. This phylogeny provides a
backdrop for the evolutionary history of one ...
Study on Origin and Phylogeny Status of Hu Sheep
Hu Sheep Origin Phylogeny Status Phylogenetic Relationship
2016/4/13
Applying simple random sampling in typical colony methods in the central area of habitat, 14 structural loci and 31 alleles in blood enzyme and other protein variations of Hu sheep population are exam...