Results 71 to 80 of about 6,802,541 (195)

Contrasting Rates of Molecular Evolution and Patterns of Selection among Gymnosperms and Flowering Plants

open access: yesMolecular biology and evolution, 2017
The majority of variation in rates of molecular evolution among seed plants remains both unexplored and unexplained. Although some attention has been given to flowering plants, reports of molecular evolutionary rates for their sister plant clade ...
Amanda R. De La Torre   +3 more
semanticscholar   +1 more source

Molecular phylogenetics and evolution

open access: yes, 2014
73
Munoz-Ramirez, C. P.   +5 more
openaire   +6 more sources

Population genomics and epigenomics of Spirodela polyrhiza provide insights into the evolution of facultative asexuality

open access: yesCommunications Biology
Many plants are facultatively asexual, balancing short-term benefits with long-term costs of asexuality. During range expansion, natural selection likely influences the genetic controls of asexuality in these organisms.
Yangzi Wang   +8 more
doaj   +1 more source

Genetic Mechanism of Non-Targeted-Site Resistance to Diquat in Spirodela polyrhiza

open access: yesPlants
Understanding non-target-site resistance (NTSR) to herbicides represents a pressing challenge as NTSR is widespread in many weeds. Using giant duckweed (Spirodela polyrhiza) as a model, we systematically investigated genetic and molecular mechanisms of ...
Martin Höfer   +4 more
doaj   +1 more source

Molecular metal–Nx centres in porous carbon for electrocatalytic hydrogen evolution

open access: yesNature Communications, 2015
Replacement of precious platinum with efficient and low-cost catalysts for electrocatalytic hydrogen evolution at low overpotentials holds tremendous promise for clean energy devices.
Haiwei Liang   +5 more
semanticscholar   +1 more source

Evolutionary radiations in the species-rich mountain genus Saxifraga L.

open access: yesBMC Evolutionary Biology, 2017
Background A large number of taxa have undergone evolutionary radiations in mountainous areas, rendering alpine systems particularly suitable to study the extrinsic and intrinsic factors that have shaped diversification patterns in plants.
J. Ebersbach   +3 more
doaj   +1 more source

Multiple markers, niche modelling, and bioregions analyses to evaluate the genetic diversity of a plant species complex

open access: yesBMC Evolutionary Biology, 2017
Background The classification of closely related plants is not straightforward. These morphologically similar taxa frequently maintain their inter-hybridization potential and share ancestral polymorphisms as a consequence of their recent divergence ...
Ana Lúcia A. Segatto   +3 more
doaj   +1 more source

Exploring the phylogeography of a hexaploid freshwater fish by RAD sequencing

open access: yesEcology and Evolution, 2018
The KwaZulu‐Natal yellowfish (Labeobarbus natalensis) is an abundant cyprinid, endemic to KwaZulu‐Natal Province, South Africa. In this study, we developed a single‐nucleotide polymorphism (SNP) dataset from double‐digest restriction site‐associated DNA (
Cora Sabriel Stobie   +3 more
doaj   +1 more source

Maternal Effects in Molecular Evolution [PDF]

open access: yesPhysical Review Letters, 2002
We introduce a model of molecular evolution in which the fitness of an individual depends both on its own and on the parent's genotype. The model can be solved by means of a nonlinear mapping onto the standard quasispecies model. The dependency on the parental genotypes cancels from the mean fitness, but not from the individual sequence concentrations.
openaire   +4 more sources

Pre-bilaterian origin of the blastoporal axial organizer

open access: yesNature Communications, 2016
In vertebrate embryos, Wnt/β-catenin signaling induces an organizer area guiding the formation of body axes and inducing extra axes upon transplantation. Here, Kraus et al.
Yulia Kraus   +3 more
doaj   +1 more source

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