Results 61 to 70 of about 66,141 (268)

The effect of alignment uncertainty, substitution models and priors in building and dating the mammal tree of life

open access: yesBMC Evolutionary Biology, 2019
Background The flood of genomic data to help build and date the tree of life requires automation at several critical junctures, most importantly during sequence assembly and alignment. It is widely appreciated that automated alignment protocols can yield
Yan Du   +3 more
doaj   +1 more source

Estimating Ancestral Population Sizes and Divergence Times

open access: yesGenetics, 2003
AbstractThis article presents a new method for jointly estimating species divergence times and ancestral population sizes. The method improves on previous ones by explicitly incorporating intragenic recombination, by utilizing orthologous sequence data from closely related species, and by using a maximum-likelihood framework.
openaire   +2 more sources

Venous Thromboembolism in Pediatric Bone Sarcoma Patients: A 10‐Year, Single‐Institution Experience Encompassing the COVID‐19 Pandemic

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Osteosarcoma (OS) and Ewing sarcoma (EWS) are the most common primary bone cancers in children, but acute thrombosis is poorly characterized in this population. Our study evaluated the rates of venous thromboembolism (VTE) and associated risk factors in pediatric patients with bone sarcomas treated over a 10‐year period encompassing
Sarah Kappa   +8 more
wiley   +1 more source

Combining morphology and molecular data to improve Drosophila paulistorum (Diptera, Drosophilidae) taxonomic status

open access: yesFly, 2018
The willistoni species subgroup has been the subject of several studies since the latter half of the past century and is considered a Neotropical model for evolutionary studies, given the many levels of reproductive isolation and different evolutionary ...
Rebeca Zanini   +5 more
doaj   +1 more source

Selective Sampling of Species and Fossils Influences Age Estimates Under the Fossilized Birth–Death Model

open access: yesFrontiers in Genetics, 2019
The fossilized birth–death (FBD) model allows the estimation of species divergence times from molecular and fossil information in a coherent framework of diversification and fossil sampling.
Michael Matschiner, Michael Matschiner
doaj   +1 more source

Serological Benefit of SARS‐CoV‐2 Vaccination Relative to Infection in Children With Acute Lymphoblastic Leukemia

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Children with acute lymphoblastic leukemia (ALL) are at risk of severe outcomes from SARS‐CoV‐2 (SCV2). In the post‐pandemic context, where most children have been infected with SCV2, there are limited data on whether vaccination remains beneficial in children with ALL.
Janna R. Shapiro   +11 more
wiley   +1 more source

Genetic markers in Andean Puya species (Bromeliaceae) with implications on plastome evolution and phylogeny

open access: yesEcology and Evolution, 2022
The Andean plant endemic Puya is a striking example of recent and rapid diversification from central Chile to the northern Andes, tracking mountain uplift.
Lu Liu   +6 more
doaj   +1 more source

Phylogenetic analysis and divergence time estimation.

open access: yes, 2015
(A) The phylogenetic tree of the five monocots. The results are 100% supported by the 1,000 bootstraps analysis. (B) Estimation of divergence time. Blue bars indicate 95% confidence intervals.
Zhang Zhang (14172)   +5 more
core   +1 more source

Increased Risk of Sarcomas in Children With Congenital Anomalies: Findings From the Genetic Overlap Between Anomalies and Cancer in Kids (GOBACK) Registry Linkage Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Pediatric sarcomas are a heterogeneous group of tumors that contribute disproportionately to cancer mortality in children. Although congenital anomalies are among the strongest known risk factors for childhood cancer, the risk of specific sarcoma subtypes among affected individuals has not yet been thoroughly evaluated. Procedure We
Russ Wolters   +17 more
wiley   +1 more source

Divergence time estimation of Tunisian Pistachio corresponding to the "Mid-Pleistocene transition"

open access: yesJournal of Oasis Agriculture and Sustainable Development
Pistacia vera tree, represents a valuable fruit farming in Tunisia, this type crop has been growing for a long time particularly in arid and semi-arid regions. North African origin (Tunisia) of Pistacia vera is, until now, ambiguous. The Bayesian Markov
Sarra CHOULAK   +4 more
doaj   +1 more source

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