نتایج جستجو برای: phylogenetic relationships

تعداد نتایج: 280039  

Journal: :Methods in molecular biology 2012
Matteo Pellegrini

Phylogenetic profiling involves the comparison of phylogenetic data across gene families. It is possible to construct phylogenetic trees, or related data structures, for specific gene families using a wide variety of tools and approaches. Phylogenetic profiling involves the comparison of this data to determine which families have correlated or coupled evolution. The underlying assumption is tha...

Journal: :Journal of bioinformatics and computational biology 2005
Ying-Jun He Trinh N. D. Huynh Jesper Jansson Wing-Kin Sung

To construct a phylogenetic tree or phylogenetic network for describing the evolutionary history of a set of species is a well-studied problem in computational biology. One previously proposed method to infer a phylogenetic tree/network for a large set of species is by merging a collection of known smaller phylogenetic trees on overlapping sets of species so that no (or as little as possible) b...

2016
Bart E.M.W. Stoffels Sancia E.T. van der Meij Bert W. Hoeksema Joris van Alphen Theo van Alen Maria Angelica Meyers-Muñoz Nicole J. de Voogd Yosephine Tuti Gerard van der Velde

The Phyllidiidae (Gastropoda, Heterobranchia, Nudibranchia) is a family of colourful nudibranchs found on Indo-Pacific coral reefs. Despite the abundant and widespread occurrence of many species, their phylogenetic relationships are not well known. The present study is the first contribution to fill the gap in our knowledge on their phylogeny by combining morphological and molecular data. For t...

Journal: :iranian journal of animal biosystematics 0
m. dianat m. tarahomi j. darvish m. aliabadian

the genus allactaga is a group of rodents with five morphospecies distributed in the iranian plateau. in order to conduct a taxonomic revision at the species level, 27 individuals were collected in the iranian plateau from localities typical of each species. phylogenetic relationships within species were analyzed using cytochrome oxidase subunit i and morphometric data. maximum parsimony, maxim...

Journal: :رستنیها 0
فرحناز جوانمردی دانشجوی دکتری بخش علوم گیاهی، دانشکده علوم پایه، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، تهران ([email protected]) شاهرخ کاظم پور اوصالو دانشیار بخش علوم گیاهی، دانشکده علوم زیستی، دانشگاه تربیت مدرس، صندوق پستی 175-14115، تهران علی اصغر معصومی استاد پژوهش بخش گیاه شناسی، موسسه تحقیقات جنگل ها و مراتع، صندوق پستی116- 13185، تهران طاهر نژاد ستاری دانشیار بخش علوم گیاهی، دانشکده علوم پایه، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، تهران

a phylogenetic analysis of astragalus sect. alopecuroidei based on nrdna its as well as morphological character data is presented. a total of fifty informative morphological characters were analyzed to reconstruct phylogenetic relationships for 23 taxa of the sect. alopecuroidei and two species of sect. laxiflori plus a. sieversianus and a. caryolobus as outgroups. the present analysis revealed...

2005
LAURA M. BOYKIN MICHAEL C. VASEY V. THOMAS PARKER ROBERT PATTERSON

The understanding of evolutionary relationships in Arctostaphylos has been hampered by taxonomic difficulties in this large and complex genus. A phylogenetic analysis of sequences from the ITS region for 38 species was used to provide a phylogenetic perspective for interpreting evolutionary patterns and relationships in Arctostaphylos. Phylogenetic relationships were estimated using maximum lik...

2015
Rong Li Nathan J. B. Kraft Jie Yang Yuhua Wang

Traditional attempts to delineate floristic regions typically focus on species distributions, often ignoring the rich context that phylogenetic relationships can provide. In this study, we explore how phylogenetic relatedness, taxonomic composition, and regional phylogenetic structure change across a global biodiversity hotspot region, Yunnan, located in southwestern China. We propose a system ...

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