Results 81 to 90 of about 350,492 (197)

Coalescent simulations reveal hybridization and incomplete lineage sorting in Mediterranean Linaria. [PDF]

open access: yesPLoS ONE, 2012
We examined the phylogenetic history of Linaria with special emphasis on the Mediterranean sect. Supinae (44 species). We revealed extensive highly supported incongruence among two nuclear (ITS, AGT1) and two plastid regions (rpl32-trnL(UAG), trnS-trnG).
José Luis Blanco-Pastor   +2 more
doaj   +1 more source

A distinct sortase SrtB anchors and processes a streptococcal adhesin AbpA with a novel structural property. [PDF]

open access: yes, 2016
Surface display of proteins by sortases in Gram-positive bacteria is crucial for bacterial fitness and virulence. We found a unique gene locus encoding an amylase-binding adhesin AbpA and a sortase B in oral streptococci.
Haase, EM   +6 more
core   +1 more source

Evaluating multiple criteria for species delimitation: an empirical example using Hawaiian palms (Arecaceae: Pritchardia)

open access: yesBMC Evolutionary Biology, 2012
Background Robust species delimitations are fundamental for conservation, evolutionary, and systematic studies, but they can be difficult to estimate, particularly in rapid and recent radiations.
Bacon Christine D   +3 more
doaj   +1 more source

A phylogenomic study of Steganinae fruit flies (Diptera: Drosophilidae): strong gene tree heterogeneity and evidence for monophyly

open access: yesBMC Evolutionary Biology, 2020
Background The Drosophilidae family is traditionally divided into two subfamilies: Drosophilinae and Steganinae. This division is based on morphological characters, and the two subfamilies have been treated as monophyletic in most of the literature, but ...
Guilherme Rezende Dias   +4 more
doaj   +1 more source

Similar fish species composition despite larger environmental heterogeneity during severe hypoxia in a coastal ecosystem

open access: yesEcology and Evolution, 2022
Environmental heterogeneity is one of the most influential factors that create compositional variation among local communities. Greater compositional variation is expected when an environmental gradient encompasses the most severe conditions where ...
Naoto Shinohara   +10 more
doaj   +1 more source

Species and sorts of lilac flowering duration in Ufa

open access: yesSamara Journal of Science, 2018
The paper presents characteristics of lilac flowering duration in the South-Ural Botanical Garden-Institute of Ufa Federal Research Center of the Russian Academy of Sciences. When selecting prospective species and sorts for landscaping purposes for each region, it is necessary to obtain a comprehensive assessment of decorative features.
openaire   +2 more sources

Statistical Inference of Allopolyploid Species Networks in the Presence of Incomplete Lineage Sorting [PDF]

open access: yesSystematic Biology, 2013
Polyploidy is an important speciation mechanism, particularly in land plants. Allopolyploid species are formed after hybridization between otherwise intersterile parental species. Recent theoretical progress has led to successful implementation of species tree models that take population genetic parameters into account.
Jones, Graham   +2 more
openaire   +3 more sources

Optical Micromanipulation Techniques Combined with Microspectroscopic Methods [PDF]

open access: yes, 2015
Předložená dizertační práce se zabývá kombinací optických mikromanipulací s mikrospektroskopickými metodami. Využili jsme laserovou pinzetu pro transport a třídění živých mikroorganismů, například jednobuněčných řas, či kvasinek.
Pilát, Zdeněk
core  

An HMM-based Comparative Genomic Framework for Detecting Introgression in Eukaryotes [PDF]

open access: yes, 2013
One outcome of interspecific hybridization and subsequent effects of evolutionary forces is introgression, which is the integration of genetic material from one species into the genome of an individual in another species.
Dai, Jingxuan   +5 more
core   +2 more sources

Anchoring quartet-based phylogenetic distances and applications to species tree reconstruction

open access: yesBMC Genomics, 2016
Background Inferring species trees from gene trees using the coalescent-based summary methods has been the subject of much attention, yet new scalable and accurate methods are needed.
Erfan Sayyari, Siavash Mirarab
doaj   +1 more source

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