نتایج جستجو برای: reticulate

تعداد نتایج: 1153  

2010
Yufeng Wu

MOTIVATION Reticulate network is a model for displaying and quantifying the effects of complex reticulate processes on the evolutionary history of species undergoing reticulate evolution. A central computational problem on reticulate networks is: given a set of phylogenetic trees (each for some region of the genomes), reconstruct the most parsimonious reticulate network (called the minimum reti...

2016
Philip R Cohen

Drug-induced reticulate hyperpigmentation is uncommon. Including the patient described in this report, chemotherapy-associated reticulate hyperpigmentation has only been described in ten individuals. This paper describes the features of a woman with recurrent and metastatic breast cancer who developed paclitaxel-induced reticulate hyperpigmentation and reviews the characteristics of other oncol...

Journal: :Journal of computational biology : a journal of computational molecular cell biology 2004
Vladimir Makarenkov Pierre Legendre

In many phylogenetic problems, assuming that species have evolved from a common ancestor by a simple branching process is unrealistic. Reticulate phylogenetic models, however, have been largely neglected because the concept of reticulate evolution have not been supported by using appropriate analytical tools and software. The reticulate model can adequately describe such complicated mechanisms ...

2012
Usha Chouhan

Phylogenies ; The evolutionary histories of groups of species are one of the most widely used tools throughout the life sciences, as well as objects of research with in systematic, evolutionary biology. In every phylogenetic analysis reconstruction produces trees. These trees represent the evolutionary histories of many groups of organisms, bacteria due to horizontal gene transfer and plants du...

Journal: :Molecular phylogenetics and evolution 2012
Emily B Sessa Elizabeth A Zimmer Thomas J Givnish

Reticulate, or non-bifurcating, evolution is now recognized as an important phenomenon shaping the histories of many organisms. It appears to be particularly common in plants, especially in ferns, which have relatively few barriers to intra- and interspecific hybridization. Reticulate evolutionary patterns have been recognized in many fern groups, though very few have been studied rigorously us...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2013
Joseph Minhow Chan Gunnar Carlsson Raul Rabadan

The tree structure is currently the accepted paradigm to represent evolutionary relationships between organisms, species or other taxa. However, horizontal, or reticulate, genomic exchanges are pervasive in nature and confound characterization of phylogenetic trees. Drawing from algebraic topology, we present a unique evolutionary framework that comprehensively captures both clonal and reticula...

Journal: :Biyolojik çeþitlilik ve koruma 2021

The seed exomorphic characteristics of four taxa (Cardamine graeca, C. impatiens subsp. impatiens, raphanifolia and uliginosa) belonging to Cardamine were investigated with scanning electron microscopy (SEM). This study presents characteristics, including colour, shape, winged, measures, coat pattern. Four patterns observed; regularly reticulate, irregularly-reticulate, blister tuberculate-reti...

Journal: :Journal of bacteriology 1973
Y Tanami Y Yamada

In an electron microscope study on the developmental cycle of the goat pneumonitis strain of Chlamydia psittaci in L cells, it was observed that miniature reticulate bodies, measuring approximately 0.2 mum in diameter and surrounded by double unit membranes, were produced infrequently from normal-sized reticulate bodies through a "budding"-like process. As little as 0.1 mug of penicillin per ml...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2016
Eric J Ma Nichola J Hill Justin Zabilansky Kyle Yuan Jonathan A Runstadler

Reticulate evolution is thought to accelerate the process of evolution beyond simple genetic drift and selection, helping to rapidly generate novel hybrids with combinations of adaptive traits. However, the long-standing dogma that reticulate evolutionary processes are likewise advantageous for switching ecological niches, as in microbial pathogen host switch events, has not been explicitly tes...

Journal: :Indian Journal of Dermatology, Venereology, and Leprology 2013

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